EXPLAINED: PCIe lane SWITCHING & Biggest MISTAKES! | Don't DO IT 👉 WRONG slot for m.2 SSD!

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Why you don't want to make these mistakes!
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#tutorial #PCIelanes #creators
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⏲️
0:00 Intro
0:58 1. What are PCIe Lanes?
1:34 2. CPU vs CHIPSET PCIe lanes
6:32 AMD THREADRIPPER (AD)
7:44 3. How to find out how things are connected in your PC?
9:00 4. Understanding BLOCK DIAGRAM
14:30 5. Showing Examples on different motherboards AMD vs Intel
20:03 Conclusion: What it means to you?
21:21 BIGGEST MISTAKE!
22:55 Best PC creators can build?!

Пікірлер: 264

@theTechNotice 6 ай бұрын

CORRECTION: Ryzen 7000 has 24+4 PCIe Gen 5 lanes instead of 20+4 what I said in the video. Thank you everyone for pointing that out! 😊

@Matlockization 6 ай бұрын

I honestly don't understand why you have background music playing when you're trying to explain something important. The background music makes it very hard to hear what you are saying and adds to the confusion of this video.

@mytech6779 5 ай бұрын

Threadripper is 120+8 or 60+4 (older not Pro). In the modern AMD structure every type of input/output device is connected through PCIe. So even on Threadripper the chipset lanes are still used for small peripheral connections that are not expected to have good latency and are not consistently moving enough data to justify reserving direct lanes for each device (x1 x2 or x4).

@cynicalaries6201 4 ай бұрын

Do you have the link for the other video you did on the PCle lanes in more detail? You do a great job explaining.

@barbatocedric4246 2 ай бұрын

A litle late but . . . Ryzen 7000 have 24+4 (total 28) witch can only be totally in use with X670E. 20+4 (total 24) was the 3000 and 5000 series. The 1000 and 2000 was having 16 in total. You can have 1 GPU at gen 5x16 and 2 SSD NVME at gen 5x4 and the other via the chipset (can go to 2 gen 4 x4 as gen 5 x4 have double the bandwith).

@dipi71 Ай бұрын

PCI and its variants are bus protocols. Components connect to the bus. What's presented in the video sounds more like point-to-point connections (lanes ostensively »come from the CPU« or »come from the chipset«). This Tech Notice explanation does not make sense.

@Babicoste 6 ай бұрын

Easier method: I always check the Tech Spec -> Storage Section on their product website or the manual about M.2 slot before adding extra storage: My Asus ROG Strix B450-F Gaming Tech Spec: *3 When the M.2_1 Socket 3 is operating in SATA or PCIE mode, SATA6G_5/6 ports will be disabled. *4 When the M.2_2 is occupied by M.2 device, PCIe x16_1 will run at x8 mode. I don't want to give up the pcie lane for my GPU, so I bought a 2.5 SATA SSD as a secondary storage instead

@singwolf. 3 ай бұрын

Here are the spech of my MSI B650 th 3x M.2 (Qty) M.2_1 Source (From CPU) supports up to PCIe 4.0 x4 , supports 2280/2260 devices M.2_2 Source (From CPU) supports up to PCIe 4.0 x4 , supports 2280/2260 devices M.2_3 Source (From Chipset) supports up to PCIe 4.0 x4 , supports 2280/2260 devices 6x SATA 6G (Qty) • M2_2 supports PCIe 4.0 x2 speed when Ryzen™ 5 8500G is installed so i can run a secondary nvme as storage?

@snkbnk 6 ай бұрын

There is a small mistake in the information you provided regarding the AMD 7000 CPU. Number of PCI lanes is 24+4. Not 20+4.

@dismuter_yt 6 ай бұрын

That's not a small mistake though 😅

@theTechNotice 6 ай бұрын

Yes, you are right, thanks for pointing that out!

@wotreplays8896 3 ай бұрын

@@dismuter_yt Yes, he enjoys making fun of JayzTwoCent's errors in some of the videos, but the motherboard he suggested can't read some of my hard drives, so I'm considering sending him the bill right now. ;))

@jirehla-ab1671 Ай бұрын

If i set the pcie slot to x8x4x4 & i install a dual nvme expansion card on the slot what will happen?@@theTechNotice

@appuswami6611 6 ай бұрын

I am very glad there is Tech Notice out here making these kind of videos for creators. Everybody else talks only about gamer pcs. Anyhow even though I am still confused I at least know where to start looking - Block Diagrams. Thank you Tech Notice for making such videos and engaging in the comment section.

@theTechNotice 6 ай бұрын

appreciate the comment, you're exactly who I'm making these videos for! :)

@WiscoMadman 3 ай бұрын

This comment right here. I second that sir! Thank you!

@michaelgleason4791 2 ай бұрын

This video was a lot of word salad. Just check your motherboard manual.

@WiscoMadman 2 ай бұрын

@@michaelgleason4791 actually I found it fairly helpful considering, as a first time builder, I didn't know a lot of this.

@robertnelson3179 6 ай бұрын

Thanks for reviewing and clearing this up. I had chosen one of the gigabyte boards you recommended and had to make sure the SSd was in right slot to keep it going.

@shanemcknight1583 6 ай бұрын

Very good info on this! As a creator, this knowledge is very helpful on discerning your system and quite useful when building one and choosing the right motherboard that will be a benefit to your area of work.

@shanent5793 6 ай бұрын

There are PCIe 5.0 peripherals: the NVIDIA H100 GPU and ConnectX-7 NIC, and several SSDs. You should note that the x16 connection on Intel LGA1700 can only be bifurcated x8/x8, which is less flexible than AM5 which allows x4/x4/x4/x4

@mytech6779 5 ай бұрын

I have an old 990fx AM3+ board (The northbridge provides all PCIe) and it has 40+4 PCIe2.0 lanes (data is sparse so a bit of collecting data and calculating on my part). The 990 chipset could support(based on board vender), either 2 x16 ; x8/x8/x16 ; or x8/x8/x8/x8. x32 is in the PCIe standard but I don't know of any x32 devices. and still had 2 x4 and 2 x1 (or the option of 1 x4 and 6 x1 ) for expansion cards 2 or 4 PCIe lanes (unclear they renamed it alink-Express3), were used for the southbridge which handles all of the network(1Gb), USB(~10 mix of 2.0 and 3.0), 6-SATA, firewire, eSATA, audio and several legacy headers for things like serial and parallel.

@567davefair 6 ай бұрын

Ryzen 7000 series has 24+4 lanes to CPU. 16x lanes for PCIe, 8x lanes NVMe and 4x to chipset. On the x670e you have two "dedicated" M.2 slots to the CPU so no lane switching(sharing).

@jamestaylor3805 6 ай бұрын

MSI Tomahawk has some interesting potential for tweaked graphics performance due how it's laned with a direct to CPU slot and a chipset wired slot. Would be a great board for exploring the real difference in performance from various lane routing.

@ricardobimblesticks1489 6 ай бұрын

Great just picked up a z790 tomahawk, so my options are - 1. Read the manual or 2. Spend hours tinkering and benchmarking. Looks like I'm gonna need more coffee :D

@tomquimby8669 6 ай бұрын

Gigabyte some of them- Yes z790 elite x has gen 4 m.2 top slot and 16 lane to first graphics card slot. so no switching! Good video as this confuses so many people

@joshhardin666 6 ай бұрын

long story short, mainstream platforms have insufficient pcie lanes for common uses. with all current mainstream platforms, you get 3 pcie slots and up to 3 m.2 slots. typically a 16x gpu is going to be in the top pcie slot. if you put a card in the second pcie slot it will half the bandwidth to the first (gpu) pcie slot to 8x. this is UNACCEPTABLE, particularly now that we have cards with good memory bandwidth. the third pcie slot is a 4x slot (which can sometimes look like an 8x or 16x slot but it's electrically only 4 lanes). this is typically shared with the second m.2 slot (at least it is on amd platforms) this means if you have a high bandwidth m.2 drive slotted in the second m.2 slot, it will have to share bandwidth with whatever is in that 3rd pcie slot. this too is unacceptable because that could very well be a multi 4k capture card, or another m.2 ssd on an adapter pcie card. the top slot (at least on amd boards) is direct cpu connected in every case i've seen, the THIRD m.2 slot is typically connected through the chipset which means it has to contend with your onboard 10g nic, your audio solution, your onboard usb3.2/4, etc. etc. which can slow things down quite a bit. tl;dr: intel and amd need to start giving us more pcie lanes on these platforms. 64 or so should do it, that should at least give us 3 real 16x pcie slots, 3 m.2 slots that aren't switched, and a dedicated pcie 4x to onboard dual 10g networking so it doesn't slow anything down. there are lots of people like myself that are peeved that they'd have the audacity to charge us something like another THOUSAND dollars just to get reasonable numbers of pcie lanes and a couple extra memory channels.

@Crossfire2003 6 ай бұрын

Great video! I always check the manual of the motherboard, and I usually choose Gigabyte.

@danielagius6634 4 ай бұрын

Excellent video. One of the most informative channels out there. Well done.

@kaede15 6 ай бұрын

This is my main issue for years, can't afford a threadripper, but the difference in # of PCIe Lanes between Threadripper and Ryzen is just ridiculous. Every gen upgrade AMD is adding 4 miserable lanes to the Ryzen line.... People need at least 2 full PCIe 16x and a 3erd at least 8x. Not including m.2 of course. Every system I built I have to choose between, fast network cards or storage HBA, and that always comes with a sacrifice of my GPU PCIe bandwidth by HALF which is around 5-10% perfornmace....

@leenagle2903 3 ай бұрын

Nobody needs 2x16 slots. Gaming. Sli/xfire is dead Productivity no card out there saturates pcie 4.0 8x let alone 16x

@bharumusic 6 ай бұрын

Great video!! I really needed to know a lot of this information right now for a build I want to do 🙏🏾

@antonmarriott5641 4 ай бұрын

Question?: The MSI Mag Tomahawk Wifi DDR5 MAX does not have a cpu connected pci4 nvme slot other than slot 1. So the question is which is more beneficial having the main hard drive connected directly to cpu and leaving only 8 lanes for gpu; or connecting main hard drive to chipset and having 16 lanes for gpu? Articles I've seen so far seem to indicate a negligible performance difference between 8 lanes and 16 lanes for gpu usage, but I don't really see anything about the latency difference between using chipset or cpu for ssd...or combined evaluation. Right now I have a i7-12700K and rtx3050 so slot 1 for my nvme is for me as 3050 only uses 8 lanes anyway, but I am planning on upgrading in the future. Primarily used for gaming, but also learning python and GIS (GIS rendering seems intensive).

@blessedjunior6989 6 ай бұрын

I really tried but i got morr confused but i will rewatch again

@zbigniewkrajewski7536 6 ай бұрын

Very good and informative, now please compare speeds of gpu going in x16 and x8. Thanks for very good video!

@drxpsaucx4157 2 ай бұрын

There currently is no PCIE 5.0 GPU's 5 x8 is equal to 4 x16

@tanmayhembram9249 3 ай бұрын

Excellent topic to discuss keep it up. Learned a lot.

@tehsimo 5 ай бұрын

WHYYYYYYYYYYYYYYYYY do ASUS not give us the block diagrams?

@rangefreewords 21 күн бұрын

“Great videos, but context can be spotty. Smoothness suffers due to connectives and unavailable components. Articulation is solid, but arguments sometimes lack clarity.” 🎥👍

@YamieX 6 ай бұрын

I have a Z690 Aero G DDR4 with a 12th Gen 12700K, and I was just looking at the recent Z790 boards and noted that the recent Z790 can reduce the top slot and was wonder why they went with the design. As I have populated all my 4 M.2 slots, I was quite surprised by the recent Z790 update, as it will be a concern if a creator needs the additional M.2, will have to choose between the m.2 and GPU. Hope that they will consider to review the reduction by the PCIE lane in future.

@mikelascelle2921 5 ай бұрын

Nice vid. Helped alot. Wish my motherboard had a diagram like that and not just words

@WalterKleeven 3 ай бұрын

Thanks Big time, finally I understand this kind of things, very helpful videos for creators in what to do and what not! THX.

@ChristVill45 4 ай бұрын

I'm Very Glad that i Subscribed to you and didn't regret it. Every Videos you Upload always gives me Fresh Knowledge, Every small Information about PC components🔥🔥 I can Consider myself as a Computer Nerd🤓

@gherbent 6 ай бұрын

Useful video. Although I knew some of the info, so many PC users live in negligence to know it.

@thonymartinezb 2 ай бұрын

Thanks for the video! Does this lane switching also hapenns on pcie 4.0 / pcie 4.0?

@SoneliasT 6 ай бұрын

Some motherboards lose SATA ports if extra M2 slots are used. It is not only a reduction in lanes for the graphics card slot that can be lost

@theTechNotice 6 ай бұрын

True!

@juanestebanmascietti8360 2 ай бұрын

Amazing info.. well explained. Love you son cameo at 15:10 second.

@blahorgaslisk7763 2 ай бұрын

Note that a lot of motherboards for the AM5 socket and currently AMD Ryzen 7000 processors doesn't support PCIe 5.0 for the x16 slot for GPU or the first M.2 slot. Others support one M.2 at PCIe 5.0 but still only PCIe 4.0 for the x16 slot for GPU. Finally there are cards that support up to PCIe 5.0 for both the first M.2 and the PCIe x16 slot for the GPU. Note that this is present in both B650 motherboards and X670 motherboards. So check the documentation so you know what the capabilities of the motherboard is. The PCIe x16 only supporting up to 4.0 is today no big deal as currently there aren't any graphic cards that support PCIe 5.0. It might actually matter in a year or so when new graphics cards are released. But even then I doubt it will be a dramatic difference between running those cards at PCIe 4.0 or 5.0. The limit on the M.2 slot is however more real as there are very high performance M.2 drives that support PCIe 5.0. However we're talking about 7GB/s or 15GB/s, and while this sounds drastic it's not really something you are likely to feel the difference of in real life. Besides the maximum transfer rate tends to be limited in span on the fastest drives. Once you've filled the buffer on the drive the write speed will go down a lot. PCIe 5.0 drives also tend to use more energy and run a lot hotter than the PCIe 4.0 drives. What I'm trying to say is that there are speed limitations on the PCIe slots and the first M.2 slot on a lot of motherboards. And yet that doesn't necessarily mean that they are bad. But check the specs before you buy so you aren't surprised when PCIe is limited to 4.0 if you upgrade in the future.

@venkat1742 6 ай бұрын

Thank you so much bro amazing information very helpful 🫡

@jb678901 2 ай бұрын

One of the reasons why I still like my cheap X99 build (X99TF motherboard) with the XEON E5-2696v3 (18core/36 thread; 3.8Ghz turboboost). FORTY (40) PCIE lanes (albeit Gen 3)! I also like its FOUR(4) CHANNEL MEMORY and ability to support either DDR3 or DDR4 (limited to 2133Mhz, but in four channel)! Sure, it's a decade old processor. But at only $45, it can still deliver a CB R23 multi score of 14,050 pts. Yes...the IPC isn't great...and its efficiency cannot compare with modern CPU architecture. But it gets the job done well and it runs cool on air...and never exceeds 53C at 20C ambient. For gaming, it will typically run ~3.7 Ghz all core (turbo unlocked). On full stress loads, the 145W TDP becomes its hard limit and it will revert to 2.8Ghz all core. Mine is well matched with the venerable RTX 2080Ti.

@pyromethious 2 ай бұрын

This is why researching your Board is probably the most important thing you can do when in the design phase. FYI, this has been a thing since at least the existence of PCI in general (AFAIK).

@dianaalyssa8726 6 ай бұрын

TY. Always found this topic super confusing.

@admiral7192 3 ай бұрын

19:16 The expansion will divide the speed between the used NVMe and there is nothing you or the manufacturer can do about that. The only useful thing is to use the expansion for data storage and not as system driver.

@dafyddthomas7299 Ай бұрын

Thanks for excellent video

@protator 2 ай бұрын

99.9% of M.2 adapter cards, like the Asus Hyper cards, DO NOT have lane multiplexer chips on them. Cards that do usually cost $150 and up. Most mainstream mainboards, unlike a small number of xeon and Threadripper workstation mainboards, DO NOT feature pci bifurcation on all pcie slots

@naturalgeocrappic5179 6 ай бұрын

Thanks - very useful

@theTechNotice 6 ай бұрын

Thank you! 🙂

@AlanGresham 4 ай бұрын

Hey, that’s one of Melbourne’s tunnels with the cars in it. Crazy odds of it being footage from my neck of the woods 😎

@SVT_LIGHTNING 6 ай бұрын

My msi z790 tomahawk I have all 4 pcie slots filled with 4 gen 4 drives and 2 sata drives. My 4090 runs at full speeds. My z490 tomahawk has both nmve slots filled and 4 sata drives it's only a pcie gen 3 "10th gen" and my 3080ti runs at full gen 3 speeds "3080ti is gen 4 but again 10th gen..." I've never had an issue with populating nvme slots and loosing lanes. Even on my old z170 and 6700k build.

@johnbaxter3611 3 ай бұрын

any chance you know where I can get a block diagram for the ROG STRIX B650 E-E Gaming? I want to put in 2 SSD's M.2 NVMe, one for the OS the other for games? I was going to put the OS one in the nearest pcie 5 slot to the cpu and one in the 2nd pcie 5 slot below, but now not sure after watching your vid? HELP!

@cinemaipswich4636 6 ай бұрын

The PLX and PCX chipsets manage the use of all the lanes. Remember, USB, Network, Audio, etc need connections.

@BrandensOutdoorChannel 3 ай бұрын

For most people it doesn't matter. Just get the biggest ssd you can afford and a good gpu. Plug in, game on.

@JTL1776 6 ай бұрын

Wondering why we cant have a Z790 gaming board with 3 PCIE lanes. Like GPU. But i want to add a Capture and Sound Card. Why when we pay 500 to 1000 for the motherboard do we have to compromise on Whats parts we can add to our pc.

@sabishiihito 6 ай бұрын

There are several Z790 gaming boards that have 3 full length PCIe slots, though obviously they're not all x16 due to the platform not having enough lanes. Z790 Aorus Master and Tachyon, MSI Z790 MEG Ace and Asus ROG Maximus Hero (not the newer Dark) come to mind immediately. Now, if you're asking why the mainstream platforms don't have all those PCIe lanes? Well, AMD and Intel want you to buy their HEDT or workstation platforms (=more $$$ for them) if you want more bandwidth.

@MasterHomebrew 5 ай бұрын

I looked carefully at my Intel CPU 12900ks specs which is a 16+4 pci lane and my Asus Z690 rog hero board which indicates that all SSD NVme sticks are running through the chipset and none run off the 16 PCIe lane. Apparently Asus doesn't think that any Nvme SSD should run from that but rather the 4 lane chipset is sufficient. That means my GPU should get the full 16 lanes unless I was to plug something else into the PCIe lane or add another GPU. I believe this is correct. Please advise if I am wrong.

@jozsiolah1435 5 ай бұрын

On some Intel processors, the difference needs a better camera, I counted 5-10 more connections on the 2 ghz core 2 duo 667, 2 mb cache laptop cpu, compared to the pentium 2.2, 800 mhz fsb, 1 mb cache.

@PaulMrPKcom 6 ай бұрын

Thanks, great info. I'm trying to decide which Z790 mainboard to get for my new pc... still confused. Looking at gigabyte-z790-aorus-elite-x block diagram. Look slike there is one PCI 5 x16 + 1 M.2 gen 4 connected to CPU, all other M2 etc are connected to the chipset. Shoudl I use the VGA + M2 connected to CPU or better to use M2 via chipset ? Maybe some one can recommend some mainboards that are better choice... ? Without breaking the bank :)

@peterfalkner4436 6 ай бұрын

Check your manual if it indicates PCIEX16 G5 X16 AND M.2 X4 connected to CPU, then you will get the full 16 lanes for your GPU if you connect your M.2 to the top slot

@kyrgeorge 5 ай бұрын

So what mainboard did you chose?

@PaulMrPKcom 5 ай бұрын

@@kyrgeorge Gigabyte Auros Elite X wifi7 with g.skill ram @6000hz. Just had it few days, so far installed Linux without issues beside no wifi7. Win 11 works fine when installing using their media creation tool (not stand alone ISO), no M2 drives found, can't add mb drivers... The mb feels great, heavy and high quality, should last for next 5 years or so. On papper this new pc is 2.5x faster than my old pc with, but in reality for every day tasks the speed is about same to be honest. :)

@dawbra 2 ай бұрын

Did you have simillar video about ram and what means 1:1 speed ratio etc and how to setup it?

@Miffokorv 11 күн бұрын

So i have a question... im with the z790 rog maximus hero board. im running all m.2 slots and have a gpu in first pci. if i plugg a 2nd gpu in the slot 3 pci.. no power and no signal cable what will happen? will my 1 gpu lose bandwith or will my system crash becous no power to gpu? and will my m.2 drives still work?

@daisyduck8593 Ай бұрын

What do you think is faster for the games data installation ? An 2TB M.2 drive encrypted with Bitlocker that is connected directly to the CPU with its x4 lane (as C: main drive). Or the games data on a second 2TB M.2 drive that is not bitlocker encrypted and not connected directly to the CPU with the lane, but via x4 to the chipset ?

@user-fg5ke3qb7e 2 ай бұрын

on z790 i9 14900k can i use gpu in top slot and in last 2 slots i wish to put evga nu audio pro ( it has 2 slots to take) is that gonna work fine ? and lets say 3x m2 samsung 990pro

@JohnyTFK 6 ай бұрын

Perfect timing. I'm looking for new mobo right now =D

@alrizo1115 6 ай бұрын

So if you're using the m.2 slot at the top of the gpu, there's no lane cut as long as it's a gen 4? So how about using the pcie slots below the top pcie slot? Will it cut the main to half if for example we add an m.2 there?

@bogdan12275 6 ай бұрын

That’s what i need to know, i think it will be fine if it’s a Gen 4, i dunno I’m so bad at PCI-E Lanes lol. Just look it up in ur mb manual.

@alrizo1115 6 ай бұрын

@@bogdan12275 if I understand it correctly, the 13th gen in particular, has has up to 1x pcie gen5 x16 and 1x pcie gen4 x4. So a 4th gen m.2 installed in the cpu chipset will not cut down the gpu lane. But if you use the extra pcie slots at the same time, I have no idea either

@theTechNotice 6 ай бұрын

I think that's a good way of looking at it, but always double check the manual! :)

@AlfaPro1337 6 ай бұрын

Dude, read the manual for clarification, it's on the web! For free! Intel 12th gen, introduced x16 Gen 5 + x4 Gen 4. Some motherboard, the top most (the closest to the CPU) wired it to Gen 5 lanes, while other Gen 4. AMD on the other hand, doesn't separate. Meaning, if you installed PCIE 4.0 devices, your entire CPU's PCIE will run at Gen 4 speed.

@anoid3433 2 ай бұрын

Does the AM4 x570 chipset suffer from PCIE lane switching? I have a Samsung 990 Pro NVME SSD and I noticed that it is slower in the 2nd M.2 slot.

@StreamVirtual 6 ай бұрын

Those proart boards have a big problem. The heats sink on the chipset sticks up too far and prevents pCie cards from properly seating in the second slot making the slot worthless. I have 4 of them and I'm thinking about chucking them all in the trash now.

@ArunSingh-rr8fc 4 ай бұрын

you'll need to custom watercool and get a GPU block.

@Hyperion1722 2 ай бұрын

With NVME drives getting cheaper, drive expansions is ideal for AM5 X670 chipset. I have a chugging Z170X motherboard but ok with me as I can directly install two NVME drives plus two SATA drives. The 4 sata ports were disabled when using the second NVME drive but ok with me.

@st4849 5 ай бұрын

My MSI Z790 Edge WiFi DDR4 seems to have independent PCIe 5.0x16 + NVME 4.0x4 to the CPU and don't affect each other. Also, it says DMI x8 between CPU and chipset. Maybe this is how it frees up 4 PCIe lanes for the independent NVME slot?

@kakaka1k 5 ай бұрын

My pro msi b650m A-WIFI board takes only gen 4 nvme ssds, will this affect my performance if I put it into my nvme in the one closest to the cpu?

@temp50 3 ай бұрын

18:14 Very bold statement. I have the same card (Hyper M.2 X16 gen 4) and it doesn't have a PLX chip on it. It means that if you wanna use the 4 M.2 slots on the boards, you have to bifurcate the given PCI-E X16 to 4x4. Are you sure that the motherboard supports bifurcation for EVERY X16 slot? Because they are usually supporting it only on the first X16 slot but not the other ones, even if those lanes are also connected to the CPU and not the chipset. Slots connected to the chipset are most probably not supporting PCI-E bifurcation at all.

@VeritasEtAequitas 4 ай бұрын

What's funny is that half lanes is still more than enough on PCIE 5 and often enough on 4. Even the 4090 can't saturate the last gen bus. But we've known this is the case since PCI Express 2 first came out, and it's a great thing.

@ArunSingh-rr8fc 4 ай бұрын

Someone below a month ago stated a 5-10% performance hit on the GPU at half lane/8x. That might be for gen 4 but I'm looking to future proof the GPU lane at 16x and stick with Gen 4 m.2 to the CPU.

@VitisCZ 2 ай бұрын

i have an Asus TUF b550 chipset motherboard and it has 2x m.2 slots and 6 sata slots. When i plug an M.2 SSD into the second slot it disables 2 of the sata ports and uses that to run the second m.2 slot. So i can have 2x M.2 + 4 Sata drives or 1x M.2 + 6 Sata drives. Also since the second m.2 slot uses bandwidth of 2 Sata ports it limits the second m.2 SSD to 1.5GB/s speed (single Sata 3 is 6gbps so 12gbps = 1,5GB/s).

@sorin5713 5 ай бұрын

THANK YOU MAN . 👍👍👍

@GunslingerTi 5 ай бұрын

I have this Riptide motherboard, rtx 4080 and ssd Samsung 990 PRO. My system crashing on default bios(updated). when i set PCIE1 to Gen3 pc can start but crash. When i set DMI to Gen 3 stress cache failed. Only if set PCIE1 to Gen 3 and DMI to Gen 2 system is stable but ssd are slow. on gpu a have also updated Vbios. Im something missing in bios or its just broken mobo or gpu? I know that on igpu its working without problems and my 4080 working on old pc

@Nalianna 6 ай бұрын

I just wish that more manufacturers would display on their websites if their motherboard supports pcie bifurcation (to x4x4x4x4).

@GONZALOARTECHE 6 ай бұрын

I have a new ASUS ROG Maximus Z790 Dark Hero (WiFi 7) LGA 1700, and I buy also a RTX 4090 and 1 Crucial T700 2TB Gen5 NVMe M.2 SSD where I can place the M2 to be same speed and don't loose and PCI lane?

@digitalQ33 2 ай бұрын

You can’t. I am building a similar setup with that board now, went with gen 4 ssd’s populating m.2 socket 2 & 3, the dark hero board both m2 socket 1 & 2 route through the cpu, but only m2 socket 1 is capable of gen 5, which will cut your 4090 to gen 4 x8 I don’t “think” you can run a gen 5 SSD anywhere but m2 socket 1. Love to hear others thoughts

@FalcondRippr 6 ай бұрын

So...I have an Asus ROG Strix Z790H MB with a 13700K. I installed my M.2 OS drive into the top slot because it had a better heatsink. I have a 4060 ti in the slot below. Am I losing any bandwidth to my GPU and if so, which slot should I use? Thanks.

@OutLanderUSN 6 ай бұрын

The 4060ti only runs on x8, so it won't be affected.

@FalcondRippr 6 ай бұрын

Cool...thanks.@@OutLanderUSN

@peterfalkner4436 6 ай бұрын

The Rog strix Z690 gamming F has 1x pciex16 G5 and 1x M.2 x4, so you still get 16 pcie lanes for your GPU if you plug your M.2 in the top slot.

@xBINARYGODx 6 ай бұрын

all z690 and z790 do this - the only time it matters for the top slot is later when gen 5 NVMe's come out - but given they still have no saturated, or otherwise maxed the gen 4 NVMe's yet, I dont think it really matters.

@essentialone1 3 ай бұрын

IVE ALWAYS UNDERSTOOD THE THE M.2 ABOVE GPU SHARES PCIE LANES AND BANDWITH WITH CPU WHICH IS THE FASTES AND BEST W2AY AS IN PERFORMANCE TO USE FOR YOU (OS) ETC AND THE OTHER M.2 SHARES LANES WITH SOUTHBRIDGE CHIPSET DEPENDING ON GEN OF MOBO AND CPU

@tapioorankiaalto2457 3 ай бұрын

If you lose 8/16 PCI-E 5.0 lanes and use a PCI-E 4.0 GPU does it still get the 16 PCI-E 4.0 lanes? 5.0 is twice the bandwidth of 4.0 am I right? Or does it just cut the lanes no matter the gen?

@exes_official 6 ай бұрын

Can you do this video but for audio production?

@protator 2 ай бұрын

Whether you run into this problem depends on the specific cpu/mainboard combo you chose. Simple fix: Disable your brain's low-power mode and dl the mainboard's manual before buying it. Even the useless crap Asus calls a manual is going to have at least a block diagram with the board's pcie lane distribution and tables for pcie slot bifurcation. That's all there's to it. RTFM kids.

@RobertBrown-fy3ej 6 ай бұрын

I agree to some extent BUT doesn't the connection between CPU and GPU separate on x8 DMI 4.0 which if I read it right is a different lane to PCIe 4.0

@dismuter_yt 6 ай бұрын

Yes the Intel 1700 platform has x8 DMI 4.0, which is equivalent to x8 PCIe 4.0. That's double what the AM5 platform provides, and makes the Intel platform better on the I/O side, because reducing the chipset bottleneck is much more valuable.

@RobertBrown-fy3ej 6 ай бұрын

@@dismuter_yt My thinking was that my Gigabyte Z790 MB has 5 NVME PCIe drives installed with boot drive in top most CPU slot separate from the other 4 (one in the PCIe 4.0 slot on an adapter) in raid 5. Thus the x8 DMI 4.0 is separate to any of the PCIe channels. as it works fine. The CPU PCIe lanes are 16 at PCIe 5.0 (GPU) and an additional PCIe 4.0 x 4 (top slot).

@danielabbott9312 5 ай бұрын

For gaming a monitor will only use 4 lanes, I have a 13900k with a msi z790 ace, I have 3 monitors with 1 being ran on the igpu in the cpu and the other 2 on my 4080, I also have a gen 5 ssd, my gpu runs on 8 lanes because of this, but I have zero loss in gaming performance because 8 lanes is all the 2 monitors need

@chrisenoiu Ай бұрын

My new mobo has a diagram that shows 16+4 or 8x2 + 4 . It's important to know that because not all the mobos are cutting the 16 PCIe slot in half while adding a M.2 SSD on the top.

@Camrographer 3 ай бұрын

It’s not super critical for me as a photographer, but I was upset when I noticed that myASUS rogue maximus cut down, bandwidth or disabled I think two of my data ports Or cut their bandwidth down if I installed a second nvme drive. Especially since all my SATA ports are populated with drives. . I wonder if it’s worthwhile to buy a creator motherboard instead of a gaming one, and if it also provides additional headroom between upgrade periods because of all the additional slots.

@RickyBobby_USA 5 ай бұрын

7:00 When is the gen 5 Wrx80 and gen 5 Threadripper Pro going to come out...I know it's coming...lol.

@NickNathanson 6 ай бұрын

I have b650 Aorus Elite AX with Ryzen 7 7700. This MoBo has x3 m.2 slots. Question: can I fill ALL x3 m.2 slots with three SSDs and have all of them at x4 PCIe 4.0 lanes? What will happen to my GPU in this case? Will it still have x16 PCIe lanes?

@akirafan28 5 ай бұрын

I checked the specification for the motherboard on Gigabyte's website, and found no information regarding decreased speed of the x16 slot when all m.2 slots are in use.

@ronbrooks6322 6 ай бұрын

good info up to the point of pushing AMD and the outragous price tag for a thread ripper system. you can get 9 intel CPUs for the price of one $5000 AMD CPU.

@glennquagmire3258 5 ай бұрын

He has the radiator for the water cooler mounted above the CPU losing up to 33% performance in cooling. Not a big deal if you are not overclocking, but a point of failure if you are. Just an FYI for enthusiasts and power users who like to tweak their systems.

@anonymous4gent 6 ай бұрын

I wanna play Sims 3 on the threadripper. Will I get 60fps?

@tejiriamrasa3258 6 ай бұрын

🤦

@oscarmetal 6 ай бұрын

You are not the troll we wanted but the troll we needed

@ryanforbes5275 Ай бұрын

Having an issue folks. Running a proart z790, 13900 i9, 3090 rtx, have a 500 m.2 in slot 1, went to expand slot 2 with a 2 tb black ssd and it shows up and formats, I started copying my unreal engine stuff and it just drops off the system, won't even show up in disk manager, reboot and it will do the same thing when I stay copying files. Took the drive back for a replacement thinking the drive was faulty and the replacement is doing the same thing. Had anyone had issues like this?

@user-tu6qi8nr5m 5 ай бұрын

My top nvme only runs at gen 4 X1 speed not x 4 ryzen 7 3700x b550 is it a lane problem or is it a broken mobo

@JamesSmith-sw3nk 6 ай бұрын

I have a MSI Pro Z790-P wifi ddr 4 with a 13700k. I can not get decent speed out of my top pci-e slot. I changed the nvme drive to a lower slot and when I use the top pci-e slot with a rtx 3060ti, it gpu mines at half the rate it should. The other 2 pci-e slots give me full performance. I've tried setting multiple bios pci-e settings and nothing changes. I am stumped.

@markvanloon 2 ай бұрын

Disable all powermanagement for pcie in the bios. A lot of modern systems like the Z790 are build around energy reduction. with the default pcie powermanagement on all the pcie slots will downclock themselves to save power. Ive had my 990 pro set all the way back to pcie gen2 x4 just to save power. same goes for the gpu, it went all the way back to gen 2 speeds bottlenecking everything.... but it almost runs on a potato battery xD

@bobby_luo 5 ай бұрын

How that WS motherboard + Threadripper + 1x 4090 + PCIe Gen 5 x4 m.2 would perform against 14900K or 7800X3D gaming configs?

@Jawesome1Shazam 4 ай бұрын

So glad I got duped by weeb marketing and got a Z690 ROG Hero Maximus, no issues with PCIe lane sharing/switching. Only know that putting an m.2 drive in the very top slot near the CPU and a GPU in the top PCIe x16 slot and each have full bandwidth. Now, doing some research, the ROG Strix Z690 is not that convenient and it will throttle down the PCIe x16 to x8 if you put the M.2 drive in the top slot.

@user-tc4tz8ww1z 4 ай бұрын

Hello, I have been trying to understand something and still very confused: My motherboard is an MSI Mag Z790, it has NO gen 5 slots for nvme drives, only gen 4. I already have an nvme installed on slot 1 which is not interfering at all with the graphics card bandwidth according to hardware info 64 My question is this: If I install more drives on the remaining (chipset) nvme slots (all gen 4) will that make me lose graphics card bandwidth? EDIT: I watched the video again a second time... you do say that if all slots are gen 4 you don't lose any bandwidth on anything (this is important to me because I use PC for work) Thanks!

@user-tc4tz8ww1z 4 ай бұрын

Wait, the ASUS sage board has no PCIE gen 5 for thye GFX card either, is what you meant? Because my board has the one gen 5 slot for the graphics card

@gabrielchong3446 2 ай бұрын

Could I put my Gpu on the bottom slot if both pci are x16

@kassimcoc5255 6 ай бұрын

Great video! I've been on the hunt for the perfect laptop for video editing, and your insights were incredibly helpful. Initially, I was eyeing the Asus Studiobook 16, but I share your concerns about the 4070. After some additional research, I considered the Razer Blade 16 (4090), but the reliability issues gave me second thoughts. Do you have any other recommendations for a top-tier video editing laptop? I'm looking for a powerhouse with solid reliability and performance. Your expertise is much appreciated! Thanks again for the awesome content!

@tonyjohansson8395 6 ай бұрын

If you are spending that kind of money for a Mobile Workstation. Take a look at Lenovo ThinkPad P16 Gen 2. You can spec it out with a 13th gen Core i7/i9, up to 128GB of RAM with or without ECC, dual M.2 Gen4, RTX 5000 Ada 16GB (RTX 4090 mobile). You can also choose a lower en RTX 4000 Ada 12GB(4080 mobile) or a RTX 3500 ada 12GB (cut down RTX 4070 desktop).

@kassimcoc5255 6 ай бұрын

@@tonyjohansson8395Thanks

@carlblavius9256 6 ай бұрын

Whats with the annoying background music

@JIZQU 2 ай бұрын

@theTechNotice please help i have a Aorus x670E Pro X motherboard , 7800 x3d ,RTx 4080 GPU and at the moment I have 2- 4th gen m.2 nvme cards , the board has 2 cpu gen5 m.2 slots and 2 chipset m.2 slots on the board . im so confused as to how to install the m.2 slots after watching this video . one is my Os the other is file storage . please help , ignorance was bliss now this is eating away at me lol

@MichaelBrownPlus 3 ай бұрын

This is definitely CPU + motherboard dependent. Best bet with intel z790 is to leave the top gen 5 m.2 slot alone and setup a RAID 0 or 10 with 4x 1tb gen 4 SSDs. Or even do a RAID 0 on 2x SSD gen 4 on the chipset. I get 17k mb/sec read/write on m.2 gen 4 which crushes a single gen 5 m.2. My corei9 14900k smokes on a Gigabyte Extreme X with full x16 on my RTX4070. Now on my sons amd 7950x3d AM5 platform which has 4 gen 5 m.2 slots, he can RAID 0 up to 4 gen 5 m.2 and 20+k mb sec read/write. And keep x16 on his Nitro 7900XTX. Can’t touch the AMD pci lane support for Gen 5!

@tek_soup 6 ай бұрын

pcie 4.0 x8 is the same as pcie 3.0 x16 in terms of theoretical bandwidth. im running a 4090 at x8 and it is fine. my board knocks out the m.2_1 because i have to use the bottom pcie x16_2 because i have a watercooled gpu, that won't fit in the first slot.

@scottcampbell2707 3 ай бұрын

Also, it is worth checking whether your GPU can use 16 lanes. Some GPUs are wired for x8 and would gain no benefit from a x16 slot over a x8 one.

@diosyntaxa 4 ай бұрын

Not sure about my new motherboard (still waiting on the system), it's a TUF Gaming B650 (plus WIFI which I got because X670 is simply overkill for my needs), it has three M.2s-lots and from what i can tell first two are fine to use but if I use the third one I lose access to the second PCIex16-slot (which runs at x4 I think). Since I'm only using one GPU I should be fine. Using an old GPU and will only use a PCIe4-M.2. though I could plug a PCIE5 one in since the first slot is PCIe5. Will use all three slots since I'll transfer the two M.2 I use in my current system... Yes, Threadripper takes it to another level, including another level of pricing :D Will probably never have one :)

@taomahNEGEV 6 ай бұрын

I still do not know which the best slot is for the m.2 SSD for the system.

@LowKDPlayer 3 ай бұрын

Need help: Just got a 4080 Super and it is only running x8, My mobo is Z690-E Wifi I have 1 M.2, It is in slot M.2_2. My 3080 was in the exact same spot and was running at 16x... I'm really lost here. GPUZ is showing PCIe x16 4.0 @ x8 4.0.

@aloktripathi27 6 ай бұрын

Honest feedback : Too many words with little important information, less clarity

@locinolacolino1302 6 ай бұрын

Why settle for half the words when we can get double? More is more.

@user-cr3pj2nr4e 6 ай бұрын

Rtfm

@Markus_Bern 4 ай бұрын

Apparently you just don't understand the issue

@chemaalonso7931 2 ай бұрын

Yeah man idk why they dont explain like we are 5 years old omfg

@michaelgleason4791 2 ай бұрын

Yeah this was a long-ass video to say "check your manual."

@techluvin7691 6 ай бұрын

Very little in the way of a performance loss going from x16 to x8 mainly because graphics cards currently cannot saturate the bus.

@jandras1 2 ай бұрын

Yeah, there are many other commentators who say there is zero reason to care about dropping GPU-dedicated lanes from x16 Gen5 lanes to x8 Gen5 lanes because we are years away from graphic cards that need more than x8 lanes or, equivalently speaking, will benefit from x16 lanes. If true, then connect your Gen5 SSD to the top slot, drop the GPU from x16 to x8, and move on with no reduction in GPU throughput.

@rlmtech 6 ай бұрын

Isn’t Intel 20 lanes plus the dmi lanes to the chipset? Therefore 16x5.0 for GPU and 4x4.0 for the first m.2 which is always dedicated… Everything else comes from the chipset ?

@dizzywow 2 ай бұрын

Yes. The video is very misleading. There is no reduction in video card PCIe when using the first M.2 slot.

@user-uo5rk8qb5v 6 ай бұрын

been an intel fanboy for awhile, but this information is making me reconsider my next build. seems like amd/ryzen is the winner. whats the point in buying an intel platform now?

@dizzywow 2 ай бұрын

AMD is not the winner. Intel provides 16 lanes to the video card and 4 lanes to the M.2.

@glennquagmire3258 5 ай бұрын

So if you did dual FPUcards that were connected together, I assume each would get 8 lanes as you explain and its total throughput would be hampered in tests like Cinebench, but the raw GPU power that both generate would be evident in some tests, but not others compared with a single GPU getting to use all 16 lanes.