Originally Posted by Ghost12
Any of you guys running 2 x lightning on air, if so which board are you using? and what is the pcie spacing like, currently have my build round the z87 maximus gene so looking for the best sli option as the gene does not have the spacing for 2 x lightning on air, wanted to go hard line tubing for my cpu loop and the fact the z87 Asus formula lets you use compression fittings for the vrm block would be ideal over the gigabyte sniper 5 but am concerned looking at photo's that there would be no room for sli and my sound cad on the formula.
The other option would be to wc both and they would then probably fit on my gene board, is it possible to use the original backplate or save any of the lighting features the cards have on air?
Also could just wc the top card, what is the thickness of the card with a block on? thanks
I'm a bit late but I was having the same issue a couple weeks ago. At first I had a ASRock Z87 Extreme4 and with it, the top card was just overheating, it would get 20°C hotter than the bottom one. So if the bottom one was @58°C the top one had ~78°C
I then replaced my case, got some side panel fans and I even placed one to the right of the top card blowing air directly between the two cards. All that helped about ~7-8°C which was ok but not the best.
With a 33% off sale I bought the MSI Z87 XPower board which has a very good PCIe spacing for SLI. Almost like it was designed with 2 Lightnings in mind
So now the temperatures of both cards are almost equal the bottom one is sometimes ~2°C hotter but both are good considering i'm on air.
I saw that you already got a new board, the ASUS VI Maximus Extreme which has the same spacing as the MSI XPower and a couple others. Your choice was good because there are only a couple boards which have this PCIe spacing.
ASRock Z87 OC Formula, Gigabyte Z87X OC Force, ASRock Extreme9 and ASUS are some that come to my mind besides your ASUS Maximus Extreme and the MSI XPower.
So with those boards you should have no problem doing SLI and the temps should be good as long as you have good airflow in your case because ~500W heat are beeing expelled in the case.
Now with your sound card, things get a bit more complicated. I see 2 options:
a) you stick it in the slot between the two cards, in your case that would be the black slot between the second and third red PCIe slot. BUT i would definetely not recommend doing so because it would void any benefits you get from this extra slot in between. The top card would probably overheat
b) you get a 10 PCIe expansion slots supporting case like the Corsair 900D and put the bottom card in the very bottom slot. BUT then you'll probably run into issues with the front panel stuff, as you already pointed out.
So either you drop your sound card or stick with one card OR go for watercooling. EK's blocks are one slot design.
Did you already try SLI?