Hi thare... i was wondering if any of you with triple sli config's have had the temp of your primary card about 20c higher than the other two. now i run all three of these on a 790i ftw digital from EVGA with a q6600 at 3.6 with 8 gb of DDR3 1800 Mhz from Corsair and my ambient temp is about 74c in my work room. before i upgraded to the 790i, i had a 680i sli that i tested 3 way sli on, which worked perfectly and those temps were all the same!... about 40-41c at idle and under load at about 55c. all of the temps for each card were the same and SLI was probably scaling pretty well.

But when i fired up my new 790i and enabled 3 way sli, popped in Fallout 3 and noticed that my temps were way uneven. 72c on the 1st card, 46c on the 2nd card, and 43c on the 3rd card. card fans were at 100% and the driver i used was 186.18. Card's 1 and 2 are running on pci-e 2.0 so if its the bandwidth diff. from the 3rd card thats making the difference, sucks for me because i cant disable it.

please give your opinions as to why this may happen. most of my games are all certified for SLI and have an SLI-enabled profile.

Thats exactly what i thought. Here is a pic of what it looks like in the CP (not exact photo of current CP version). as i am typing this, i read my rooms thermostat is at 75 Fahrenheit and on the EVGA precision utility, card 1 is at 54 idle and cards 2 and 3 are at 43 and 41 idle. wierd.. i check the sli profiles in the 3d settings page of the cp and the games that have sli enabled profiles are either on nv rec. (SLI) or 3 gpu AFR (which i know worked on my other board well). this is also in an antec 1200 so plenty of cooling.


http://images.anandtech.com/reviews/...way_SLI_CP.png

yup. still not the temps i want in 3 way sli.

you'd be surprised at how hot the top card can get in 3 way sli , 20 degrees isnt too bad , if its within its range i would'nt worry too much

well see this is weird but i can tell my other cards are now doing some of the graphical work because, when i took 1 out of the 3 out of my case just to try temps with 2 way sli (which then they were equally cooled because of the empty space where 3 should be), i noticed that when i put the 3rd back in and ran my games with 3 way sli, the first gpu wouldnt go over 64c and the other cards would only be about 7-8c off from it. so i dont know how trying 2 way sli benefitted 3 way sli, but its gotten better and i just should try to keep my room cool enough and not change anything with the card config.

Oh and the PSU in an antec 1200 is Bottom-mounted.