cooling passive vga with case fans only?

GreenRay · Post by **GreenRay** » Thu Feb 25, 2010 5:26 am

I noticed that some silverstone cases such as the Fortress series are equiped with three 180 mm fans placed on the bottom blowing upwards. This case also has the mobo turned 90 degrees. Is this sufficient to cool a passively cooled VGA like a 5850/5750?

flinx · Post by **flinx** » Thu Feb 25, 2010 5:54 am

No, because the VRMs on the 5850/5870 will get too hot. You'd need a lot more airflow than three case fans set to low for that. It might work for less power hungry cards though.

Tzupy · Post by **Tzupy** » Thu Feb 25, 2010 7:18 am

If you use the Thermalright VRM-4, then cooling the VRM mosfets (actually, the chips that play mosfets' roles) shouldn't be a problem.
But passive cooling of a 5850 GPU may be tricky. The 5750 that you mentioned uses much less power, did you really mean 5750?