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June 27, 2013, 04:48:11 PM |
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I read this thread and it got me thinking about my own GPU's that i had noticed had gotten much louder in the past couple of weeks, i did blow the dust out a couple off weeks ago but they still seemed louder than before. So i ordered the Phobya HeGrease Extreme
Before cgminer target temp 74 Degrees auto-fan:
MSI HAWK 6870 Temp=77 Fan=4500rpm
XFX Reference 6870 Temp=73 Fan=2460rpm
Powercolor 7950 Temp=73 Fan=2550rpm
I first used a Vacuum cleaner and then a foot pump with plastic nozzle to blow away dust the best i could on all 3 cards (have used compressed air sprays before and not impressed)
The MSI HAWK was the card concerning me the most(used to be quiet) so i took off the heatsink removed the old paste and applied a thin even coat of the HeGrease. Also gave the Heatsink another blast with the footpump while it was detached.
After:
MSI HAWK 6870 Temp=73 Fan=1829rpm Huge improvement
XFX Reference 6870 Temp=72 Fan=2106rpm Small improvement
Powercolor 7950 Temp=72 Fan=2570rpm No improvement
Very impressed with the change to the MSI HAWK running 5 Degrees cooler with less than half the fan speed. But was disappointed with the Powercolor 7950 considering the apparent success of the new paste i thought i would try it on the 7950 too. So took that apart and cleaned off the old paste and was surprised at how rough the heatsinks contact area was so decided to sand/polish the base to a nice shine and apply the HeGrease.
Powercolor 7950 Temp=73 Fan=1600rpm Big improvement
So overall i am very happy with the results however it is hard for me to conclude what processes caused the improvements as i cleaned away dust/applied fresh/different paste and smoothed the heatsink all at the same time.
Well that's my experience i hope it's useful to others.
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