Crashes at around 75 degrees.....

senior520

Honorable
Nov 3, 2013
1
0
10,510
Hi guys, first of all thanks for the info ive found here over the years, helped me solve many a problem when building my previous systems. This is the first time ive needed to ask a question so here goes....

Basically I recently bought a second asus gtx570 to sli my system, everything went fine at first, doing well in benchmarks ect, after a day or so of use I started getting system crashes when running 3d programs at load, after some testing I belived the fault to be the second 570 card (secondhand), but niw after removing it and doing a fresh os install im not so sure, im now getting sytem hangs and crashes when benchmarking with just the one card, which was fine beforehand.
Crashes are always when the card hits 74/75 degrees after around 1 minute hard benchmarking in furmark.
And im starting to wonder if running two direct cull cards has cooked my origional card due to lack of air?
Knkw ive thrown a lot of info in there but ive been scratching my head over this for a few days now, and im stumped.

system specs are....

asus m4n98td evo mobo
amd 965black @ 4.1ghz ( corsiar a70 cooler )
8gb corsair xms3 ddr3
corsair 850w modular psu
1x asus gtx570 direct cull ( second card has been sent back )
coolermaster haf x case ( all fans installed with antec side fans set to high speed )

Thanks for any help.