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Could we do a better GPU air cooler?

post #1 of 87
Thread Starter 
A few of us got to talking about GPU cooling and how it dumps heat everywhere inside of case. How would we design a cooler that will fit into normal cases on normal ATX motherboards that does not turn the case into a convection oven.
post #2 of 87
anything but water cooling will dump direct heat into the case.
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post #3 of 87
Thread Starter 
I would think a 3 slot design could be done for GPUs. 3 slots is almost 61mm wide and each slot opening in back of case is 15.9x93.7mm high. PCB and GPU are about 10mm plust another 10-12mm for heatsink base gives us about 40mm thickness of fins.
** If fins were curved so airflow was in top and turned toward back 4x 55-60mm fans could be used to feed air in the top and 2x more could be on front end of cooler.
** Or maybe make cooler higher and require case to have venting above the slots (not a big demand). Cooler could be 150-160mm tall x 50mm wide and full length of PCB so say 200mm front to back? Fans could be 60mm and funnel into 55-58mm to fit so multiple graphics cards could be used.
post #4 of 87
Quote:
Originally Posted by doyll View Post

I would think a 3 slot design could be done for GPUs. 3 slots is almost 61mm wide and each slot opening in back of case is 15.9x93.7mm high. PCB and GPU are about 10mm plust another 10-12mm for heatsink base gives us about 40mm thickness of fins.
** If fins were curved so airflow was in top and turned toward back 4x 55-60mm fans could be used to feed air in the top and 2x more could be on front end of cooler.
** Or maybe make cooler higher and require case to have venting above the slots (not a big demand). Cooler could be 150-160mm tall x 50mm wide and full length of PCB so say 200mm front to back? Fans could be 60mm and funnel into 55-58mm to fit so multiple graphics cards could be used.

If you are willing to sacrifice three slots, you could set up several 40mm fans with high static pressure (like the Noctua A4) in a series with very high fin density and blow it out the back of the case. Ideally the entire blower would be somewhat sealed against the card to avoid hot air leaking out.

You might be able to even pull in from the back somehow.
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post #5 of 87
Thread Starter 
That is basically what reference coolers are doing now. biggrin.gif
post #6 of 87
Quote:
Originally Posted by doyll View Post

That is basically what reference coolers are doing now. biggrin.gif

True, but I haven't seen many reference coolers that can stay below 25dB at 4500rpm

http://noctua.at/main.php?show=productview&products_id=47&lng=en&set=1

They say 18dB, but I highly doubt that figure in a real life situation.

Heck, you could even just copy the reference design but use a higher quality 80mm (maybe even 92mm) fan, denser fins, and seal all the openings between the intake and the exhaust.

I like your big heatsink idea though for a single card setup, probably much easier to execute and whisper quiet.
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post #7 of 87
Thread Starter 
I'm not a gamer so have no need for more than one card anyway. But do gamers really need 2, 3 or 4 GPUs? 2 mabye, but 2 could be space so a 3x socket cooler could be used.

I have an older ASUS GTX580 DirectCU II 3x slot card that I custom shrouded with 2x TY-100 fans. It's whisper quiet. biggrin.gif
post #8 of 87
Oh, it was never about "need" biggrin.gif

I don't use my computer for gaming, I use my games as an excuse to build a nonsensical computer. It probably spends as much time being taken apart as it does playing actual games... but I've probably got mental problems tongue.gif
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post #9 of 87
Thread Starter 
Quote:
Originally Posted by Judelexan View Post

Oh, it was never about "need" biggrin.gif

I don't use my computer for gaming, I use my games as an excuse to build a nonsensical computer. It probably spends as much time being taken apart as it does playing actual games... but I've probably got mental problems tongue.gif
I don't know about you, but I definitely do. biggrin.gif

Even though my system is getting old by today's standards it is still very fast. In fact I have only had 2 major changes in system in last 12 years. First was Athlon, and then i7 920 .. which I still use. My pride is X58A-UD5 / i7 980 and Asus GTX 580 DirectCU II. But their days are numbered.
post #10 of 87
That 920 is like a classic. I remember fawning over reviews of it when it came out, but couldn't find an excuse to buy it at the time.

The UD5 is fantastic set of boards. If they follow Asus and add real PWM to all their 4 pin slots, that might be my next board.
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