SLI MSI GTX 580 Lightning Xtreme Edition Issue!

[fromundacheese@live.com]

I have 2 MSI GTX 580 Lightning Xtreme Editions SLI'd together, the top one registers about 1 degree hotter idle, which is fine, but under load it gets to be 10-15 degrees hotter, ALSO @ the same fan speed (both configured at 60% idle, the bottom one is running @ 2790rpm and the top - closest to cpu - is @2640)

There IS ample space between them (1.5 slots) and I HAVE tried designating the bottom one to be primary display with the top closest to CPU designated as the secondary or phys-x gpu, and it makes no difference.

There is a 200mm CM Megaflow blowing right on them both, more so on the bottom one, but that doesn't explain RPM difference.

I logged in one day about a month ago, and it was like this... It hasn't changed for better or worse since then, and they are both BRAND NEW and NEVER overclocked (yet).

They are running on an ASUS Maximus IV Extreme-Z Mobo, on non-NF200 slots, so I ruled the heat out from that, but I suspect the added heat could be radiating from my CPU cooler. So... Any help or thoughts on this issue would be appreciated (especially if this has happened to you).

 

[dugdiamond]

you will want to add another fan (120mm) blowing through the middle of them (from the power end) and out the back of the case. the bottom one is obviously ccoking the top one

removing the pci_backplates between the cards will also improve airflow... this is the cheaper option without having to go down the watercooling route.

your 200mm chassis fan cools okay, but unless the hot air is efficiently blown away from your cards and expelled from the case you will continue to suffer.

how many fans do you have in your rig, and what are they configured like (intake/exhaust) ?

 

[sheroo]

Also have you tried swapping the cards around just to verify your results that its the position of the card not the actual card.

 

[JezEngland]

I have that problem. Running 480's with ASUS's M 3 Formula. If the EVGA's in the top it runs abou 9 degrees hotter but if it's at the bottom it runs equal temps and the other card is a POV and isn't obviously hotter in either. EVGA lives underneath, I hoped to run it 1st slot because it'd get used more and has the warranty to cover, giving the POV a better chance of survival, i think

 

[fromundacheese@live.com]

you will want to add another fan (120mm) blowing through the middle of them (from the power end) and out the back of the case. the bottom one is obviously ccoking the top one

removing the pci_backplates between the cards will also improve airflow... this is the cheaper option without having to go down the watercooling route.

your 200mm chassis fan cools okay, but unless the hot air is efficiently blown away from your cards and expelled from the case you will continue to suffer.

how many fans do you have in your rig, and what are they configured like (intake/exhaust) ?

Ive got a 230mm in front (intake) 200mm side panel (intake) 140mm Rear (exhaust) 2 x 200mm top/rear is exhaust, top/front intake (had them both set for exhaust, but got better cooling this way through trial and error)

 

[fromundacheese@live.com]

But this still doesn't help me with the RPM issue, which is a bigger problem... Which could also be the direct reason for the temp difference.

 

[fromundacheese@live.com]

*sigh* These cards were expensive as balls, I hope there is no big problem.