Why is my 8800GTX SLI config so darn HOT??

v3raxOC

Junior Member
Feb 10, 2007
24
0
0
I built an SLI machine using an ABIT FP-IN9 SLI Mobo and 2 x 8800GTX. One is a BFG the other an EVGA, both clocked at stock 575/1800. I am using a Cooler Master 850 Real Power Pro PSU and a Thermaltake Armor case.

The problem is that after playing Call of Duty 2 for about 15 minutes, I start getting extreme drops in FPS and it stutters like crazy. If I exit the game, and check my temps on the GPUs, they are around 78 and 72 respectfully.

To touch them is very hot. My 3dMark2006 is around 11,300 which I thought would be much better than that when I went from a single 8800 GTX to SLI.

The power suppy has 6 12v rails, each outhputting 18a. It has 4 PCI-e 6 pin cables and I am using all four.

Someone told me that one cause of overheating is under powered cards. However, I would think that this Power Supply has more than enough power for an 8800GTX SLI setup.

I did the SLI setup in the4 forceware and have tried differnt drivers, yet I still keep gettting an extreme drop in FPS (from constant 250fps down to like 15fps in COD2)

What am I doing wrong?
 

lavaheadache

Diamond Member
Jan 28, 2005
6,893
14
81
the reason why you think that your 3mark score is low probably cause the GTX's are bottlenecked at the low res of 1280X1024.
 

JAG87

Diamond Member
Jan 3, 2006
3,921
3
76
thats heat alright. the solution is to put a 120mm fan blowing on their side. the temperature must be going way higher than 72 and 78 to make the cards throttle though. Try enabling the temperature logging in nvidia monitor, and check the graph after your COD2 session.

edit:
your 3dmark score should be at least 13k. i get around 16k, but I have a quadcore which doubles my cpu score from ~2500 to ~5000. what cpu are you running?