"Static Pressure Fans" Don't Exist - Part 7: Same Fans, Different Heatsink

Рет қаралды 1,644

5 ай бұрын

So this time round we are looking at how the same fans perform on a different heatsink - in particular, a heatsink that is quite similar to the original copper version but has fundamental alterations to its design. Before I discuss the results, I take a look at some of the underlying physics concerning fluid flow and forced convection. I hope you enjoy the content - thanks for watching!

Пікірлер: 18

@MichalHalczuk 5 ай бұрын

Got this video randomly recommended and I'm not disappointed. When thinking of high-performance heatsinks I always forget about necessity for forced turbulent flow, but more manufacturers are adding featers like specially shaped fins to force that in. Generally speaking there are always many things that can be engineered out of thin air to increase efficiency. One of the best visible examples are modern vacuums, where more energy spent on brush roller and agitation increases the cleaning potential, even with much lower overall power.

@FanPhys 5 ай бұрын

Thank you :) I think one of the big sticking points at the moment is that companies are just churning out the same stuff rather than innovating, which Thermalright always did well in the past. I'm planning to compare these older coolers with the newest kids on the block because I'm curious how much of a difference 15+ years of advancement has really made.

@taylorsharp5928 5 ай бұрын

Would be interesting to see what happens if you use a fan spacer / shroud to hold the fans 1-2cm away from the cooler.

@FanPhys 5 ай бұрын

Yep we used shrouds many years ago and they seemed to go out of fashion - I see they are making a comeback! Will hopefully be able to test this in a future video. :)

@SPLFagos 5 ай бұрын

I use thermalright twin tower peerless assasin cooler with one t30 between the towers and it works great at 950rpm noiseless, no mount brackets needed, fits tight

@FanPhys 5 ай бұрын

Yes, the peerless assassin seems to be the top 120mm air cooler at the moment. It would be interesting to see how it performs with different fans.

@tik3v623 3 ай бұрын

I'm also interested 👍

@SPLFagos 3 ай бұрын

@@FanPhys phantom spirit is abit better tho

@Andrew_Thrift 5 ай бұрын

I already miss the NIDEC G1238 "Mystery" fan :)

@FanPhys 5 ай бұрын

Don't worry, it (and others) will be back again soon :)

@tiagoferreira086 5 ай бұрын

Aerodynamics and fluid dynamics can get really complicated in certain situations...

@FanPhys 5 ай бұрын

Yes, very much so - even humble PC cooling is complex.

@MartinEB72 5 ай бұрын

With a tighter temp spread is likely an artifact of the interface between cpu and cooler.

@taylorsharp5928 5 ай бұрын

This was my thought too. The contact patch and resulting paste bond-line thickness can vary a lot between coolers and IHS. It can also take some time for the paste to reach the minimum bond-line thickness, so it's good to runs stress tests for a while before trying to take measurements.

@mgoogyi 5 ай бұрын

Rankings based on RPM are questionable. The question is noise vs performance. Thermaltake ToughFan, NF-A12x25 and Lian Li P28 are quite similar in noise normalized tests. Just compare the Pure Wings 2 versus the A12x25 on the same RPM, the Noctua is clearly less loud.

@FanPhys 5 ай бұрын

The question for the end user perhaps, but for this test it's about how the fans perform on the air chamber and then at the same RPM on the heatsinks.

@mgoogyi 5 ай бұрын

@@FanPhys Then you should show that data. Airflow in the chamber vs airflow on a heatsink. Heatsinks are not that challenging static pressure wise. I think I have only seen relevant differences on radiators and through dust filters. I think static pressure only matters in rare cases when you have not much air intake on the front of your pc case or you have a radiator. Otherwise it does not matter much what fan you use.

@FanPhys 4 ай бұрын

@@mgoogyiAll the data is shown in previous videos, and I draw the same conclusions that you do - all fans are much of a muchness. The results of my tests show that static pressure performance is not really a factor in gaming PC applications; even on a thick radiator the strongest fans are not consistently the best for cooling.