Need Advice Cooling Crossfire 4850

[aberchonbie]

Hey guys,

I have a really big problem cooling my crossfired 4850's..

Ambient Room temp is around 75-80 degrees Farenheit.

I have one 120mm fan blowing directly on the top one and the second bottom one gets limited air circ.

I thought replacing the thermal grease with AS5 would help with the first one but it actually runs hotter by around 10 degrees Celcius! WTHECK!!!

I'm thinking about opening up the first one again.. maybe i didn't reseat it tight enough.


Currently on idle, and 0% GPU use, I'm reading 66 degrees C for the first and 53 degrees C for the second.

When gaming (GRID), I see artifacts and then the comp crashes and reboots. Pretty sure it's a heat issue.

I have:
1x 120 mm blowing air into the case for HD's from front
2x 120 mm blowing air into the case for CPU/1st 4850 from side
1x 120 mm blowing air into the case for CPU cooler from rear

For Pic:
http://www.abrahamchon.com/wp-content/gallery/crossfirex-setup/Computer%20through%20Side%20Panel.JPG
NOTE: the 2x 80mm on side have been swapped out for 2x 120mm

Any thoughts guys?

 

[aj95]

maybe a faulty graphics card... try without crossfire, and then let us see the temp results.

 

[aberchonbie]

maybe a faulty graphics card... try without crossfire, and then let us see the temp results.

I don't think it is a faulty graphics card..

I have the ASUS EAH4850 (not the TOP version, but the one with the glaciator heatsink)..

 

[the last resort]

i assume you have the fan speeds on the cards turned up.

 

[rdb]

Had the same problem. Turned the fan speed up with Riva Tuner and seems to be fine now.

 

[aberchonbie]

Had the same problem. Turned the fan speed up with Riva Tuner and seems to be fine now.

DL'ed RivaTuner long time ago.. installed it and running fans at 80% for warcraft3 (a joke for the 4850) results in GPU temps of 67 and 53..

 

[drinkingcola86]

Pending on what driver version you have might also help. In 8.5 the cards tended to run a little warmer and well in 8.10 they added a fan speed adjuster to the CCC. I have mine running at a constant 55% and at idle they are about 30-40c when gaming for a period of time they get up to about 50-55c. They are just a hot card unless you can somehow get the head to dump outside the case.