ASUS P2B Restoration: Board #3 - Native Coppermine Support with Mod!
Рет қаралды 7,118
Күн бұрынThe third P2B is going through the restoration process today! This board is very similar to the previous board - the ASUS IC is badly corroded and many traces and vias need to be cleaned. Surprisingly, there were no broken traces anywhere on the board. In each episode, I try to provide some extra detail aside from the restoration process - and today, we will look into a mod that may give the P2B native Pentium III Coppermine support!
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▬▬▬▬ Timestamps ▬▬▬▬▬▬▬▬▬▬▬▬▬▬
00:00 Intro
01:18 Cleaning ASUS chip
04:43 Desolder ASUS chip
05:32 Corroded solder joints
06:37 PCBWay
07:19 Corroded vias
08:39 ASUS chip
10:52 Testing board
13:10 Coppermine on P2B
15:44 Coppermine mod
16:24 Replace power control chip
19:07 Testing mod
20:43 Conclusion
@necro_ware 2 ай бұрын
Hah, I had one P2B boards in my repairathon last summer and recorded the same modification like half a year ago, but never had the time and will to cut and release it. Finally I can free some space on my disk :)
@graphenoid 2 ай бұрын
do not delete it, release anyway. I'll also watch it.
@CMDRSweeper 2 ай бұрын
Nooooo! We want to see a Necro video on it as well!
@bitsundbolts 2 ай бұрын
Haha, looks like you have to make that video anyway! I would watch it too!
@MarcoGPUtuber 2 ай бұрын
@@bitsundbolts Count me in as well! May all the retro parts be rescued and restored!
@JohnSmith-iu8cj Ай бұрын
Don’t delete it, we want to see it!
@RockstarRunner7 2 ай бұрын
I was just about to mention switching the hip chip, and then you mention my thread lol
@bitsundbolts 2 ай бұрын
There you go :) thanks for your thread and your courage to try that!
@RockstarRunner7 2 ай бұрын
Mine is running a 1,4ghz tualeron! Crazy to think the range this board can support, if you just do a few things
@T3hBeowulf 2 ай бұрын
I bet the engraving pen never thought it'd wake up to doing this job today. 😅 Another fascinating and beautiful restoration. This is an inspiration to the hobby. Cheers!
@bitsundbolts 2 ай бұрын
Yeah, that little pen is easily the most used tool for those restorations. I'm glad it works so well!
@BrendanRaymondKoroKoro 2 ай бұрын
For vias, i drill them out with an under size drill with a pin vice. I then use old chopped through hole legs to reconnect any faulty large vias, or a fiew fine copper wire strands for those extra fine vias. With corrosion that bad, i'd do this treatment for pretty much all of them. A single faulty via is a nightmare to diagnose, let alone find
@bitsundbolts 2 ай бұрын
I have some drill bits coming my way. I think you are right that it would be better to clear out those vias. At the moment I try my best with what I have. Thanks for watching and recommending!
@tony359 2 ай бұрын
this is like watching one of those carpet cleaning videos at 2am :D You can't skip them! Nice job again and amazing mod - so the IC talks to the CPU itself and sets itself up with no human intervention? Cool! I also now use low melt for removing ICs. It's always safer. I tend to use a little hot air to pre-heat though.
@bitsundbolts 2 ай бұрын
I think the CPU is directly connecting to that IC grounding a pattern of pins which is coded for a specific voltage. That is why we can overwrite it using those adapters - they change the code.
@MarcoGPUtuber 2 ай бұрын
Says the guy who also makes motherboard repair videos.
@Ryanfox1981 2 ай бұрын
"YES!" It's alive! (12:23) Awesome feeling when you spend hours trying to revive something that was essentially destined for the scrap heap.
@bitsundbolts 2 ай бұрын
Oh absolutely!
@ChrisR3tro 2 ай бұрын
I really like that you don't just do the restoration but also go ahead and explore some mod options. Great work!
@bitsundbolts 2 ай бұрын
Glad to hear that you like the extra bits I put into those videos. Most of the time I try to answer my own questions. I'm curious and astonished what would have been possible back then.
@CMDRSweeper 2 ай бұрын
Loved those audio differences when you filmed the first boot and we get to hear the joy of "YES!" as it works... Slightly infectious joy there.
@bitsundbolts 2 ай бұрын
Hehe... Yeah, I wanted to share my joy!
@harukaapl 2 ай бұрын
Awesome job, as always! I wish to see someday Tualatin mod on few diff slockets and 440BX
@bitsundbolts 2 ай бұрын
Some day, I'll try my luck getting a Tualatin working on 440BX boards.
@ayan.debnath 2 ай бұрын
Your skill is like a ART! You solder/de-solder like someone playing a Piano!
@bitsundbolts 2 ай бұрын
Thank you 😊
@brainiac9579 2 ай бұрын
Love that series! I was the owner of a Asus P2B-DS, that I got in '99 and used 2 P!!!550 Katmai CPUs. I kept and upgraded that system for 10 years. I did the VRM controller and clock generator upgrades (Studying electrical Engineering at the time). I used 2 Coppermine 1GHz and then upgraded to 2 Tualatin 1.4GHz. That was, and still is, the best system I ever owned.
@bitsundbolts 2 ай бұрын
Wow! What a journey!
@Neksus-M06 2 ай бұрын
Had the exact same experience. I opted for a full removal and replacement of all corroded components. Solder joints should be considered as unfit. All the leads can't just be drag soldered back to state, as you said solder won't stick. Congrats for the job!!
@bitsundbolts 2 ай бұрын
Thank you!
@Inject0r 2 ай бұрын
8:19 corrosion is only likely to reappear if the board has power flowing through its via’s. So be sure to do so. :) The solder mask is creating an air tight seal, which will prevent further corrosion at least in the short term. Cracks in the solder mask due to bending and/or heat could possibly prevent that though.
@marcelofrau8818 27 күн бұрын
It is so nice to see you using drag method to apply solder.. I wonder why not so many people do it, I think it is a matter of experience. But it is very satisfying to watch your videos.. thanks for the great content. I have the feeling I learn a lot watching your videos and I feel more confident to try one or other project to recover an old board or component.
@bitsundbolts 27 күн бұрын
Thank you! I still create solder bridges when dragging solder most of the time. But you're right, it gets better with practice. You learn how much flux to use, how to hold the soldering iron, and what temperature works best for your equipment. The best way to learn is by doing - so, I hope you'll try your luck in restoring an old board.
@itstheweirdguy 2 ай бұрын
Imagine someone who started out with a crap pentium II based celeron, then soldered that chip on and put a P III coppermine in there with the 133 fsb and everything. That's awesome!
@bitsundbolts 2 ай бұрын
Yeah, all possible with this board! I did notice some bad AGP stability problems however due to the higher bus frequency of 89 vs 66 MHz. The BX chipset wasn't meant to operate at 133 MHz and therefore doesn't have the correct divider for the AGP bus at such high frequencies
@danielflakelar8193 2 ай бұрын
Awesome work dude. Keep it up.
@bitsundbolts 2 ай бұрын
Thank you!
@Ale.K7 2 ай бұрын
Great restoration and very cool mod! I would not have dared to make it myself back in the day... I would probably have ended with a broken motherboard soaked in my tears 😅. Looking forward to the next chapter in this series!
@bitsundbolts 2 ай бұрын
Thank you! Ah, yeah... I remember once damaging a Gigabyte dual bios board (Athlon XP) because one of the BIOS chips physically failed. I tried to remove it with a soldering gun! 🤦♂️ Well, I ended up with ripped of pads and had to live with a warning message while booting.
@RacerX- 2 ай бұрын
Way cool. I have both a P2B--F and P3B-F and when I wanted more CPU power back in late 99/early 2000 I did just that by upgrading. Back then I could not have done this mod but I certainly can now and that is a great mod. I like my P3B-F but the shortcoming for me is the single ISA slot. I don't think I will do this mod now as my P2B-F is how I left it with a 450Mhz PIII, and a Voodoo3 3000. It is a nice DOS and Windows rig where as my P3B-F was pretty much only ever used for Windows (ME, haha). Awesome work, looking forward to the other repairs.
@bitsundbolts 2 ай бұрын
Sometimes, it's just better to leave old retro hardware as it was intended to be. With all its flaws and shortcomings! This is what made us like and build a bond 😄
@matthouben4242 2 ай бұрын
Later revisions of the P2B (1.12 and higher) have the BCB version on board. The revision 1.10 either has the BCB or the CB version. My P2B revision 1.10 has the BCB and is able to support the Coppermine, and also the Tualatin when using a Tualatin compatible slot 1 adapter. I use the Upgradeware Slot-T adapter with a Tualatin Celeron 1.3 GHz installed.
@pavelfara9333 2 ай бұрын
Thinking about how those boards came to be so much corroded in this green way - it looks like these were stored together with older boards containing the dreadful Varta style NiCd batteries. 🤨 Nice fix! You have encouraged me not to give up on one BX master board that I salavaged at a scrapp yard. No corrosion, just scratches. Bad - but doable.
@bitsundbolts 2 ай бұрын
I wonder as well what has happened to those boards. Good luck with the BX Master board! I'm sure you'll be able to rescue it!
@mesterak 2 ай бұрын
Damn you’re good dude!
@charonunderground8596 2 ай бұрын
Amazing job, great MOD !
@bitsundbolts 2 ай бұрын
Thank you very much!
@guidolehwalder9376 2 ай бұрын
Cool power mod finding ;)
@reinhardfelgenhauer6536 2 ай бұрын
Man, what a work. Amazing.
@bitsundbolts 2 ай бұрын
Thank you
@TheOldGraff 2 ай бұрын
Cool video! Chip replacement was unexpected b/c I didn't know it would work without some bios modification
@bitsundbolts 2 ай бұрын
Yes! I was surprised as well. But it looks like the latest BIOS (which is also used on later revisions of this board) has everything that is required to communicate with this new chip.
@marquesdlr 2 ай бұрын
Amazing video, I'm surpised with every repair video you upload. Congratulations! About the 750E 'thing', this happens in lots of 440BX boards when using 133Mhz cpus. I have a 600EB for example that is reported as 450E, although this model never existed! Nothing to worry about 😊
@bitsundbolts 2 ай бұрын
I see. Good to know that seems to be normal. Must be that 133 MHz was never expected for the BX chipset.
@alnoorratansi9364 2 ай бұрын
Nice great job. can't wait more repair videos.
@bitsundbolts 2 ай бұрын
Thanks! Working on board 4 already
@jj74qformerlyjailbreak3 2 ай бұрын
I was gifted a whole box of 370 adapters and different socket adapters like 370 to P4 478 sockets. I wished I still had all those 370 boards. Some dual socket boards and slot one adapters.
@bitsundbolts 2 ай бұрын
Ah, they're worth quite a bit of money these days.
@DefenderOfBoston-yo2tl 2 ай бұрын
I wonder why it took me so long to realize it, but the question in the end is always "P 2B or not 2B"! 🤡 I'll show myself out... But seriously, congratulations on another success, glad to see you are still on track for a flawless victory! I had no idea the P2B could be pushed that far and even further, I went all in on Athlon after the P2 and never looked back. Also, super happy to see that contact cleaner did the trick here after we just discussed it for the slot on board #2. 😊 As for the corroded ISA Slots: Wipe them out. All of them. For cases in which replacement is not an option, a comparison of the effectiveness of different treatment methods would ofc still be interesting though.
@bitsundbolts 2 ай бұрын
Haha, yeah - show yourself out 🤣 Thank you - and yes, I'll try to achieve 6 of 6 boards! A contact cleaner is definitely worth a shot to clean the contacts. However, so far, I haven't seen one to remove corrosion that's better than vinegar.
@DefenderOfBoston-yo2tl 2 ай бұрын
@bitsundbolts For visible corrosion, mechanical cleaning + applying vinegar like you do is definitely the way to go, no doubt about it. For contacts that look clean but haven't been used in a long time, I've achieved good results by spraying them with contact cleaner and plugging stuff in repeatedly a few times though. It is probably also a good idea to spray freshly vinegar-treated contacts with it (after drying), if only for the protective film it leaves behind.
@tadeustad 2 ай бұрын
Thank you for documenting your journey with P2Bs - frankly you're doing a stellar, if very time-and-patience-consuming job with them!
@bitsundbolts 2 ай бұрын
Thank you. Yeah, if it would have to be a business, the time and effort to restore one of those boards isn't worth it - I do it because of the content I make for KZfaq - not because of the value of the board.
@GadgetUK164 2 ай бұрын
Awesome fix and awesome mod =D
@bitsundbolts 2 ай бұрын
Thank you!
@colonthree 2 ай бұрын
GSUS, this is coming along. OwO
@pongisan3658 2 ай бұрын
Great restoration and mod! I have an Abit SH6 that's in desperate need of a recap. Can't wait to get it running.
@bitsundbolts 2 ай бұрын
Thank you! Good luck on your recap. I don't like recapping because it's tedious work. But it has to be done
@AladimBR 2 ай бұрын
I’ve seen the post on Vogons before and bought the chip to perform the same upgrade! Good to have a quick preview on your series. I have a slot 1 Soyo board, cosmetically perfect but fails to boot… normally no boot codes. I managed to boot once and get into bios, but it frooze. The seller said it was perfect, he ended refunding me 100% and I kept the board. I changed all capacitors, no changes. I watch your content hoping it will give me some ideas on how to fix it. Persistence pays off in the long run. Thanks for the content!
@bitsundbolts 2 ай бұрын
Yes, sometimes it's just better to wait until you get more experience or an idea what could be the issue. Maybe it's related to the socket - I had some very flaky behaviour with slot 1 connectors especially when there are no retention clips. I would clean the socket with contact cleaner or a brush with isopropyl alcohol. The fact that it bootet means that the traces and vias are fine. Maybe I'll come across something similar and it gives you more ideas on what you can try. Good luck!
@AladimBR 2 ай бұрын
@@bitsundbolts yes someday I will get it. I cleaned the slots and visually there were no issues. Perhaps there are cold joints on the connectors or on the chipset, which would require reballing. I’m slowly learning that art with scrap boards, it will take time before I try something like that on such board: and it will be last resort.
@krizator 2 ай бұрын
I doing voltage regulator mod like this on chaintech motherboard. Works fine.
@spavatch 2 ай бұрын
I was looking forward to another P2B episode 😊 Regarding the HIP chip, my P2B-S also has one but in 6004BCB variety. Since the board works with a slot-1 P III 1000/133 without any problem I reckon it’s the extra B before CB what determines wider voltage range needed for Coppermine compatibility, the exact model number may be less important.
@bitsundbolts 2 ай бұрын
Yes, I there are multiple variants of this chip. But you should still check for pin arrangement - those might differ, but the function of the chip may be identical. Glad to hear you like those videos about the P2B :)
@PROSTO4Tabal 2 ай бұрын
I love you. You are hardware magician
@bitsundbolts 2 ай бұрын
Haha, abracadabra!
@myne00 2 ай бұрын
If you're going to keep doing these often enough, an ultrasonic bath would be ideal to remove most corrosion.
@bitsundbolts 2 ай бұрын
Yes, this is one tool I want to get in the future!
@felixokeefe 2 ай бұрын
An 21:56 Ultrasonic bath and Tickopur TR14 is a winning combination.
@tigheklory 2 ай бұрын
I went from a Socket 7 PCB to a Athlon XP with Nforce chipset.
@lexluthermiester 2 ай бұрын
@BitsUndBolts Again, very masterful work! My vote would have been to chip-swap to get more life from the P2B. But I was an ABit/QDI guy and never had the ASUS boards during that period of time. Was never a fan of the yellow colour scheme of their boards. Green & Blue were my jam.
@bitsundbolts 2 ай бұрын
Thank you! I am sure if people would have known back then, anyone with the right tools would have been able to swap that chip and extend the useful life of the P2B. I never owned a board from ABit... Maybe some day I'll find one to explore other options that were available at that time.
@dolphhandcreme 2 ай бұрын
i've done the BCB-mod quite some times. It's just a clean, tidy mod without routing bodge wires or cutting traces. 🙂
@bitsundbolts 2 ай бұрын
Yes! That is indeed a clean mod!
@matthouben4242 2 ай бұрын
That you got 750 MHz instead of 1000 MHz is normal. The CPU is a 1000 MHz version with a FSB of 133 MHz. This gives you a multiplier of 7.5. The 440BX chipset however delivers a FSB of 100 MHz, resulting in a CPU frequency of 7.5 * 100 = 750 MHz. On the P2B there are jumpers to force the 440BX chipset to deliver a FSB of 133 MHz. This is out of spec for the chipset, but a lot of them run perfectly with a 133 MHz FSB. Check that the AGP divider is then also set to 1/2, otherwise the AGP slot will run on 87 MHz instead of the stock 66 MHz.
@awd42 2 ай бұрын
I thought the BX only supports 1:1 and 2:3 for the AGP divider, so you're stuck with 89 MHz when using 133 MHz FSB? Some video cards are more tolerant of that than others. It does support a 1:4 PCI divider for proper 33 MHz PCI speed, however.
@matthouben4242 2 ай бұрын
@@awd42 yes, you are correct.
@bitsundbolts 2 ай бұрын
Yes, unfortunately, there is no way to change the divider on AGP. Only 1:1 and 2:3 are supported.
@deplinenoise 2 ай бұрын
Looks like it came from the radio room on the titanic. Jeez poor motherboard
@bitsundbolts 2 ай бұрын
Haha, yes! I don't know what happened to those poor boards! But they get all the help they need right now
@burnedeye 2 ай бұрын
You're killing yourself with that engraving tool, ultrasonic cleaner is the way to go.
@bitsundbolts 2 ай бұрын
I'll get one soon
@xephorce 2 ай бұрын
I love your videos. they are always interesting. only thing i could complain about would be stock music being over used but you cant help the fact that 1000s of others choose the same song in there video. lmao. I wait with anticipation for each video you make. Thank you again for the quality entertainment. and i love to see a comparison of corrosion removal products. I also like to see how each one works on different types of corrosion. like cap juice corrosion vs battery leaking corrosion. are they different and if so what product works best? I know one thing i cant stand when i clean a board is the ghostly white film that develops on the surface. its almost impossible to remove and vanished if gotten wet but comes back when dry. I did see someone say wd40 can remove it but damn that would be some work.
@bitsundbolts 2 ай бұрын
Yeah, I pick from music I downloaded from the KZfaq music library. As long as I'm not browsing through it again and find some songs I can imagine to be part of my videos, I guess we'll all have to be fine with the ones i have right now 😅 Yes, I know what you mean about that white residue that looks like leftovers of tap water, but impossible to remove. With enough scrubbing and isopropyl alcohol, it fades a little bit, but never goes away fully. Sometimes, I use those magic sponges (melamine sponge). Those work, but they are like very fine sanding paper.
@ominence9761 2 ай бұрын
Ah, this channel!- is this what TikTok addiction feels like?
@peterkornaukhov9990 Ай бұрын
Awesome. And what is a liquid the engraving tool is working in cleaning the contacts (3:51)? Thank you so much
@bitsundbolts Ай бұрын
That is just white vinegar
@emmettturner9452 2 ай бұрын
Do you think the engraving pen would be a good way to remove spot welds on 18650/21700 cell nickel strips? Like, just grinding away the tiny spot on the nickel strip so there is a tiny hole left over? Removing them cleanly such that the nickel strips can be used again when replacing a couple bad cells in a larger pack is proving to be very difficult.
@bitsundbolts 2 ай бұрын
Hm, I have a feeling that it may not be strong enough. I usually grind away solder mask, soft metal, and plastic. Technically, you should be able to engrave in metal and therefore, it should be possible depending on the bits you're using. It may take a long time though.
@emmettturner9452 2 ай бұрын
@@bitsundbolts Well, I can use it for removing solder mask and such too if it doesn’t work out for spot welds so I think I’m going to buy it from your link and try. :) Thanks!
@bitsundbolts 2 ай бұрын
Thanks! I hope it works for you. Let me know once you try it - I'm curious myself if it's strong enough
@cricketol 2 ай бұрын
always wondered if there was an adapter for slot 1 to a slot A
@bitsundbolts 2 ай бұрын
The chance that such an adapter would work is close to zero.. hehe, back to the socket 7 times when there were multiple vendors creating CPUs for the same socket.
@SidebandSamurai Ай бұрын
That was some kind of soldering job. What kind of iron tip do you use. I can see you are using high quality braid and flux everything just works for you. Your Microscope work is great as well can see everything.
@bitsundbolts Ай бұрын
I am using a portable soldering iron from FNIRSI - the HS-01. The tips I use came with the iron. I like the bevel tip since it's a nice tip for most situations.
@smallmoneysalvia 2 ай бұрын
I think it would be a fun creative technique for your videos if you processed some of the video during your montages to look like a 2000's mini-dv camcorder
@bitsundbolts 2 ай бұрын
Hehe, maybe. I just got the DaVinci Resolve Studio Edition. Finally, after a couple of months saving sponsorship money, it was time to get all the filters and effects.
@metalworksmachineshop Ай бұрын
does it use the 133 bus speed of the 1000mhz and use the 133 memory in the slots
@bitsundbolts Ай бұрын
It does have the 133 MHz option silkscreened on the board. It seems to work, but not with the Radeon 9000 (AGP) I am using due to the issue with the bus frequency of 89 MHz. Based on what I've read is that there are many cards that would work with the higher bus speed however.
@JustForFun-dn1gi 2 ай бұрын
What temperature did you use on the tip when soldering the chip or the copper wires ?
@bitsundbolts 2 ай бұрын
I set the iron between 320 and 340 degrees
@drPeidos 2 ай бұрын
I wouldn't mind seeing some comparison between oxidation removers (vinegar, lemon juice, ...).
@bitsundbolts 2 ай бұрын
Alright, let me see what I can do.
@drPeidos 2 ай бұрын
@@bitsundbolts I usually use white vinegar, it's the cheapest, I think it is also the strongest, and it's not difficult to clean with soap and water. I think lemon juice is a bit less strong and it leaves more residue when it dries (because it has more sugar than vinegar, maybe). But maybe I'm wrong. I've never tried other products. The main problem with vinegar I think it's the smell, it's not a bad smell but it is very intense for some people maybe. I don't mind the smell, I'm used to the smell of fermenting grapes. When I'm sleeping and I hear a mosquito, I pour some vinegar in a plate and place it in my bedroom and go back to sleep. I've heard that the vinegar mistakes mosquitos, but perhaps I was mislead. I like to see you remove the green corrosion from inside the holes that go from one side of the motherboard to the other side, it is very satisfying.
@awilliams1701 2 ай бұрын
I suspect that chip is probably good. Maybe that one leg was just a fluke. We'll see in a minute.
@hugo8608 2 ай бұрын
Have you tried to use ultrasonic cleaner bath?
@bitsundbolts 2 ай бұрын
Not yet. I don't own one yet. Maybe I'll get one of those smaller ones, but I wouldn't be able to submerge an entire board. Maybe it would make some cool ASMR content: cleaning dirty motherboards found at the scrapyard!
@ayan.debnath 2 ай бұрын
Question - what liquid are you using while grinding?
@bitsundbolts 2 ай бұрын
White vinegar
@pavelfara9333 2 ай бұрын
What is this low-melt solder beeing used here? I desperatly need to buy this! Thanks a lot
@bitsundbolts 2 ай бұрын
There are links to the low-melt solder I am using in the video description.
@pavelfara9333 2 ай бұрын
@@bitsundbolts Thanks a lot. 👍
@barrozo24 2 ай бұрын
can you do a video "behind the scenes" how to you use your microscope?
@bitsundbolts 2 ай бұрын
I can do something like this, but I may combine it with more things. Haha, a video about how I make a video.
@batteryman2852 2 ай бұрын
i have consider buying a microscope for working with electronics, but i do see that, the one linked in the description are over 220 Euro, and there is one 4k version Zoom 50X Stereo Trinocular Microscope, for twice as much. But i also see one with a monitor in front view, for the quarter of the price. its not that i can't effort the most expensive one, its just that maybe its not necessary to spend more than 50 euro if i need something to work with that exist below the mm size. Its possible, but its a limit on how good my eyes can see tiny details
@bitsundbolts 2 ай бұрын
I bought my microscope because it's optical and has an option to record what I'm doing using OBS Studio. Those microscopes with the screen may be good enough for smaller repairs; however, be aware that there may be an issue with delay! Basically, there are a few milliseconds of delay between what you're doing and what appears on the LCD screen. That was my primary argument to go for a trinocular microscope
@batteryman2852 2 ай бұрын
@@bitsundbolts i see, i mostly create stuff rather than repair, but the delay thing and its optical which gives clearer image maybe is something i will keep in mind.
@matthewday7565 2 ай бұрын
Is it a 3 FSB jumper or a 4 FSB jumper, may need another tweak to become the ultimate P2B, though even the best 133 option overclocks AGP to 89MHz (but has correct PCI), the 3 jumper 133 overclocks PCI as well
@bitsundbolts 2 ай бұрын
It has 3 jumpers to select FSB, but it supports 133 MHz (also printed on the silk screen). And yes, I already encountered some flaky AGP issues due to the higher bus speed.
@matthewday7565 2 ай бұрын
@@bitsundbolts 3 jumpers gives PCI 44MHz, you need to hack the 4th one in to get 33MHz PCI but the AGP stays overclocked. Depending on the board revision, the hack is either easy or difficult
@Skungalunga 2 ай бұрын
tbh I would have bought a new board and left the old system intact. The jump to 133FSB was worth it for me back then. Would an ultrasonic cleaner remove all the corrosion?
@bitsundbolts 2 ай бұрын
This revision of the P2B supports FSB 133mhz, but is an issue because the AGP frequency is increased to 89 MHz. There is no way to change it because the divider is part of the chipset. If you're using a PCI card however, then there's no issue. I don't have an ultrasonic cleaner yet. Maybe I'll get one some day.
@Skungalunga 2 ай бұрын
@@bitsundbolts Hey man! Keep up the good work. Love your content. Personally had issues withe OC AGP BUS as my NVidia TAT2 didn't play nicely with it. Forums suggest it was a "me" issue at the time, but I was not able to get it to work.
@Raven-fu1zz 2 ай бұрын
I'm sure this question has been answered before, but why use an engraver over a glass fiber scratch brush/pen?
@bitsundbolts 2 ай бұрын
I don't like the glass fibre pieces that break off using the pen. The engraving pen allows me to be more precise - a personal preference.
@awilliams1701 2 ай бұрын
I've always bought motherboards and CPUs in pairs. I've never upgraded a CPU....until 2021. I couldn't find a Ryzen 5900x and it was the CPU I just HAD to have. So I got a Ryzen 3600 instead. When I found a 5900x, I swapped it out. So my 3600 has very little use, but it was never supposed to be the CPU of my computer in the first place. So is that an upgrade? Technically. If so it's the only time I have ever done that. Personally I consider the 3600 to be a temporary downgrade.
@ninedogs2418 2 ай бұрын
about p3-1000 on this board: i have 3 440 boards : asus cubx (440bx) , asus p2-99b (its 99% same as p2b-b)(440zx) , and ZIDA ZX98-AT(440zx). NONE of them are works stable at 133 fsb. Even with pci vga. Even with chipset overvoltage. Old thg and anand articles are lie)). This easy to check in test 6 of memtest86: Test 6 [Block move, 64 moves]: "This test stresses memory by using block move (movsl) instructions and is based on Robert Redelmeier's burnBX test" . Its even called burnBX))). 3-4 loops of this test and you'll have thousands of ram errors. Partially solved by cooling the northbridge but not 100% for me. I really want to see mythbusters video about 133mhz at 440bx from you)
@bitsundbolts 2 ай бұрын
If I get the time, I'll try memtest86. Thanks for letting me know!
@AnD_RoM 29 күн бұрын
Как я понимаю, после замены микросхемы Pentium II и Celeron (Mendocino) уже не стартуют на ней ? Кстати, Coppermine были и на более низкое напряжение. У меня есть 1,5 и 1,65 вольт. Даже при использовании Slotket на напряжение 1,8 вольт мне кажется им будет плохо.
@stevencarlson5422 2 ай бұрын
makes me wonder how those got so corroded the battery isn't even close to that chip so how did it get corroded in the first place ????
@bitsundbolts Ай бұрын
I don't think this is related to the battery on those boards. The battery socket looks good on all boards. It must have been something external.
@chanakasat1 2 ай бұрын
what about the fastest tualatin??
@bitsundbolts 2 ай бұрын
I will look into this too - I don't see why Tualatins shouldn't work on this board with the proper adapter mod for them.
@msdosm4nfred 2 ай бұрын
You mean: _Tualaporn?_ :D
@user-ju2yl6bz9y 2 ай бұрын
Привет,где найти boardview на старые 486 платы? Есть какой то общий ресурс где можно поискать?
@bitsundbolts 2 ай бұрын
Very hard to impossible to find, I am afraid.
@user-ju2yl6bz9y 2 ай бұрын
@@bitsundboltsжаль что до сих пор энтузиасты не создали такой ресурс, посвещенный старым материнским платам🤷
@awilliams1701 2 ай бұрын
hmm it says core speed 1000, but the name is 750. I wonder if it's like a bios bug or something.
@bitsundbolts 2 ай бұрын
It could be. Maybe the name is derived from the multiplier (7.5) and by 100 MHz FSB max. The CPU definitely works at 1000mhz.
@pandalhao 2 ай бұрын
Have you ever had an IRQ conflict with ATI AGP cards with these 440bx cards? I'm using Windows 95 on a P3B-F with an ATI RAGE PRO TURBO AGP 2X and I always have IRQ conflicts, even manually changing the IRQ in Windows the problem continues.
@bitsundbolts 2 ай бұрын
So far, no issues. But I have not used a Rage PRO TURBO yet. The card I use for those boards is a Gigabyte Radeon 9000 (just a random pick).
@SianaGearz 2 ай бұрын
You can't change PCI or AGP IRQ in Windows, it's determined by the slot wiring and cannot be dictated by PCI PNP. And there exists a total of 4 IRQs. Usually the top PCI slot, AGP and system chipset share one. On such systems you need to use a newer version of Windows which actually supports PCI IRQ sharing. OK ASUS is a little special in that the slot IRQs can be changed in BIOS because it has an extra crossbar that is engaged before the PCI bus is brought up, but then I think the chipset IRQ wanders along with the top slot, I'm not sure, you can test it.
@SianaGearz 2 ай бұрын
Do you have Windows 95 release version or OSR2? You need every driver involved to support IRQ sharing for it to work, so mileage tends to be better with newer Windows 9x versions and also freshest drivers for everything that you can find. Apparently there is such a thing as IRQ Steering which does allow Windows to disable/enable and switch PCI IRQs but i have never seen it actually work and do anything useful!
@pandalhao 2 ай бұрын
@@SianaGearz I'm using the Win95 OSR2 version with all drivers updated. I didn't want to use Windows 98. The system works normally, runs games and everything, but it shows that there is this conflict between the AGP video card and the AGP controller.
@pandalhao 2 ай бұрын
@@bitsundbolts When you have time, do this test with an ATI RAGE PRO TURBO and let us know how it goes.
@eDoc2020 2 ай бұрын
This is only tangentially related but has anyone else come across Coppermine CPUs which only boot at 133MHz FSB but not at 100MHz? All three of my Slot 1 Coppermines behave this way but my Socket 370 ones underclock fine.
@bitsundbolts Ай бұрын
I did not try this yet. But there really shouldn't be an issue with 100 MHz FSB.
@bitsundbolts Ай бұрын
I worked on board #5 and I can verify that board #5 does also NOT boot with a 133x7.5 1GHz Coppermine @ 100MHz FSB. Very odd indeed! I will try to figure out what is going on.
@lordwiadro83 2 ай бұрын
Is the Asus chip even necessary? It is some monitoring chip. Maybe with a custom BIOS, it would be possible to boot without it?
@bitsundbolts 2 ай бұрын
It may boot without the chip. I never tried that. If I have to get one of those chips off the board for any of the last boards, I'll test it. But yes, it's mainly used for monitoring if I'm not mistaken.
@lordwiadro83 2 ай бұрын
@@bitsundbolts Thanks for your reply. If I am not mistaken, the Pentium II has no thermal sensor inside, so the best this chip can do is monitor the chipset temperatures, and the fan speeds? I am not sure if the Pentium III has a thermal sensor already. Anyway, it would be interesting to explore the topic of thermal monitoring in retro PCs. Maybe try with some home made sensors? I would love to know how much temperature can a PII/PIII actually produce.
@bitsundbolts 2 ай бұрын
The Pentium II doesn't have a thermal sensor - and if I'm not mistaken, the Pentium III is missing it too. Some boards have thermal sensors right next to the slot 1 connector, but those are probably very inaccurate. I did some thermal testing with an Arduino on a de-lidded K6-2+ CPU. I want to extend that project and maybe read more temperatures (like L2 cache, Northbridge, southbridge, VRMs, and CPU core. That could be something that may be interesting to monitor the temperatures of retro hardware.
@XeonProductions 2 ай бұрын
Why not use vinegar and a toothbrush on the corrosion and then wash it away with isopropyl alcohol? seems less abrasive than an engraving pen. Edit: Nevermind, I see you use vinegar on many other parts. I'm guessing that corrosion was extra crusty which is why you went with the engraving pen.
@bitsundbolts 2 ай бұрын
Yes, this thick crust was too much for the soft brush in combination with vinegar. The engraving pen worked quite well though
@johnk7134 2 ай бұрын
Great video, is there any way we can contact you for a help in a motherboard repair? Please help me save a DFI CS32-TC!!
@bitsundbolts 2 ай бұрын
Thanks. Yes, you can contact me through email. I forgot to add it this time in the video. The video before in which I fix board 2, I mention the email address at the end of the video. Hope that helps and thanks for watching my videos!
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