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[solved] GTX 460 SLI top card runs very hot - Page 5

post #41 of 48
good job. now let's see some temp readings biggrin.gif
post #42 of 48
Thread Starter 
yes. that will come later. pictures first biggrin.gif
100_1476.jpg
significantly more space between cards.
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post #43 of 48
how's the temps?
post #44 of 48
Thread Starter 
idling, card 1 38 C card 2 30 C
this is in the morning when temps are cool.
after 2 runs of heaven benchmarks,
card 1 : 86-87 C
card 2: 62-63 C
I noticed significantly less exhaust out the back for card 1 and significantly warmer exhaust out of my 200mm fan on top.
btw i used some cheap dried up thermal paste because i did not have time to go buy some. I'd probably do that today so tempt might drop a few more degrees. I'd like it to be in the low 80s

one concern i have is that since the fan is directly attached to the heatsink by glue, the hot metal may melt the glue and that'll make the fan fall out? O_O
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post #45 of 48
Looks good! You might want to try another option by placing a 120MM fan on the outside of the case, at the back directly against the case.
Fan should be placed so that the air blows in the case.
I had 3x GTX470 with the top card running close to 100C,
temps lowered with 10C with a external fan blowing hot air out the case at the bottom.
post #46 of 48
You wouldn't by any chance be running a multi monitor setup on you rig.
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post #47 of 48
Thread Starter 
no i'm running single monitor. i've tried undervolting to .925 volt and temps have drop a few degrees. it's in the 85 now. i think the only solution to get it lower than that is to buy a PCI-E extender cable and move my bottom card. but that cost $25 rolleyes.gif
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post #48 of 48
Well, this is an old thread, but the REAL reason they get hot is because the manufacturers that MADE them did not account for using them in SLI mode.

I put a fan behind my 570's, no change in temperature. I tried an 80 and 120 mm fan blowing directly on the cards in front of where their fans are (middle) and it only dropped the temp a few degrees.

However, I got a fan out of an HP (or IBM, I forget) server, it is only about 60mm and damn loud, but playing BF3 my temps are really close around 75 for the top one and 70 for the bottom one. Idle is around 45 and 32 (looking at evga precision right now)

I am going to go water cooling only on my GPU's, not CPU's (yes, I have the evga SR-2 with 2 6 core Xeon's) Or, I suppose with this board I can space the 2 cards out some. Right now I am running my setup on the bench till I get everything figured out.

I still blame the manufacturer, and NVIDA for the reference design. The best cooling would be to force the air from the rear with a squirrel cage fan of some sort, if you have room.

While 104 may be the design spec maximum, I am a little worried about long term life at high temperatures.
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