PC Specs :
Cpu - 4790k @ 4.6ghz oc
Mobo - Asus Hero VII
Ram - 16gigs ddr3 1800mhz Cas 9
Gpu - 2x980gtx evga SC with aftermarket gpu coolers
Psu - EVGA 1000 80gold
Os - Windows 8.1
So I got 2 x EVGA 980sc edition reference coolers on them. Managed to run them just fine with a 100mhz oc on the core and 500 on the ram, but the problem with running them so high was 80+ temps and the sound of a plane taking off in my room.
I decided too switch out the reference coolers for 2 x Accelero Extreme III gpu coolers the spacing on my board allows for sli with 1.5 cm of spacing between cards with the coolers. Ever since I've swapped the coolers my graphics driver keeps crashing on even the slightest OC. I've got the heat sinks all in place as per looking at the layout for cooling with a water block. I'm just looking for other ideas I've not tried yet; because, with the temps I'm getting on the cards now I have plenty of room heat wise for a decent OC.
Temps at idle
Top - 34
Bottom - 30
Temps at load 2+ hrs
Top - 64
Bottom - 51
Temps with a small oc of 10-50 mhz result in a 2-3 degree temp increase but crash my display driver.
I'm mostly looking for any extra ideas anyone might have to get these cards stable. They were more stable with the reference cooler on then now, but from what I've placed my heat sinks on in respect too the hydro block coolers these cards should be just fine.