Originally Posted by farkle0079;13177724
Sorry, but this point is pretty unfounded. I had an FT02 and ran a Powercolor PCS+ 5850 and a non-reference XFX 5870. There were zero temperature issues with those cards and they still ran cooler than the reference designed cards I had (Sapphire 5850, BBATI 5850, and Sapphire 5870).
In addition, I also placed a 120mm fan over the GPU area to see if I could suck the hot air away from there any more effectively and it made absolutely zero difference in GPU temperatures.
Actually it is well founded on simple principles of physics: When a card is designed to exhaust its heat out in a direction(s), I would suggest letting the air coming out without hindrance. Any obstruction in its air path (from a milder case of a spaghetti of cables hanging right outside of the exhaust slot to a more severe case of forcing the hot exhaust air back into the card) will certainly bring a less-than-optimal
This reduction of cooling efficiency might not bring an immediate short term effect but at least one thing is certain, ie it is cooling non-optimally
Anyone who does not have the FT02 but wishes to study this effect of 'push-heat-in' can simply employ a fan and point it facing the rear exhaust slot of a graphics card and will see at no time how the temperature is affected adversely. The degree of severity varies according to the specific card and the specific fan. (I suppose if the fan is a ultra fast spinning Delta, it will even bring the temperature down!). BSOD is unlikely but the temperature will rise a bit.
Simply put, it is not 'no BSOD vs BSOD' bur rather it is 'Optimal vs Non-optimal'.
Contrarily, if the fan is reversed in direction and is used to 'pull-heat-out' of the rear exhaust of a graphics card, you will likely see some mild cooling benefit. It is interesting that your case is not so with a 120mm fan. In my own situation, when I use a 'pull-heat-out' fan, the temp drops 1 to 1.5C. If the fan is reversed to 'push-heat-in', the temp rises 1 to 1.5C.
No big temp issue and no BSOD but the cooling efficiency is just not optimal.
(see pic below for my setup with an 140mm low spinning fan)Edited by windfire - 4/18/11 at 7:38pm