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6870 Crashes in Furmark after disconnecting GPU to put on thermal paste

post #1 of 2
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Hi ive disconnected my 6870 to put a new spread of thermal paste on the gpu, i used my finger to spread, i hope that doesnt ruin anything.

After restarting my 6870 lay at idle temps of around 33 c,

I started a Furmark stress test and it was going fine, it was laying at about 55c and then all of a sudden it would freeze and then crash my furmark window.

And saying something about display driver stopped working.


It appears to me that it isnt overheating, since it only ready about 55-62 degrees, whereas before i put on thermal paste i ran the same test and completed it fine at 82 degrees.

I have a couple of theories.

A) I messed up the power connectors to the gpu.
Ive plugged in the 2 closest 6 pin connectors i could see (could i mess it up here?)

B) Ive forgotten the settings i ran furmark at before, and this is causing a crash

C) I hadnt screwed the screws in tighly enough when reassembling the Radeon 6870, maybe causing there to be air between the gpu and heatsink.

I have tried screwing it harder together now, but a 6870 powercolor radeon as i have cannot be screwed hard to the board, due to coils, only about as close as shown here

http://media.bestofmicro.com/C/K/270020/original/PowerColor_AX6850-1GBD5-PPDHG_top.jpg



Anywho if anyone has some ideas to why im crashing in furmark now id be delighted to hear them!

Henrik
post #2 of 2
NEVER use your finger to spread the TIM, do not put alot on, you are only using it to fill micro gaps in the block and GPU die

use a small pea size or so dot, and then press the block on, only tightening it till its hand tight with the screwdriver and maybe a half to 1 full turn afterwards. don't want to crack the die.

also the power connectors should only be able to go in one way, but make sure they are secure, and also make sure the GPU is fully and properly inserted into the PCIE slot.

if nothing else was changed. BTW running the benchmarks should be done with default settings just to make them valid. and comparable.

was ANYTHING changed ?? drivers installs etc?

make sure you are using at least the most recent non beta drivers ideally even the beta ones if you don't have issues, but if you are make sure you run the most recent full release driver. and that the program (benchmark) is updated.
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Windows 8 Pro 64-Bit Auria EQ276W 27" IPS LED Monitor (2560x1440) Logitech Wireless Combo MK520 Corsair AX1200i Digital ATX Power Supply 80 PLU... 
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