System Freezes Under Load

[Codex]

Hi All,

Recently I built the following system, some parts were from my previous build namely HDD, Case and PSU.

New Parts:
Intel Core i7 3930K @ 3.2GHz
G.Skill 16GB (4x4GB) DDR3 Kit, PC-12800 (1600Mhz), RipjawsZ, 9-9-9-24-2N
Asus Rampage IV Formula, X79
Gigabyte 7970 3GB x 2 (Crossfired) Cat 12.8
3 x 23” Samsung LCDs (5760x1080)

Existing Parts:
2 x WD 500GB HDD
1 x OCZ Agility 3 120GB
1 x OCZ Agility 3 240GB
Thermal Take tough power 850W
Raven II case

OS Win 7 64bit Pro

Now the issue I have is the system locks during gaming and it's with all games, so it's when it's under load. Usually after about 15 min or so. To get it back I have to physically cut the power, I can't even use the reset boutton on the case.

With general apps like Firefox for example I'm getting corruptions in the text and then a black viewing area, with IE9 I'm only getting corrupted text.

Now I havn't overclocked anything, I'm still learning the motherboards various options but I've set the overall profile to default.

Now with 2 x HDDs, 2 x SSDs, 2 x GPUs, an i7 3930k and 4 x case fans running is my 850W PSU enough? Is this overheating? Is this a memory issue?

[JTDawg]

I'd say ram timing and other mobo settings , if i remember it is a 1to 4 ratio ,to get it to read 12800 (1600) on ram . also turn off hyper threading . look up mobo an find settings you have to change in advanced dram config.

[Codex]

Well for those who may have had a similar problem. I've fixed mine by rolling back the video card drivers to Cat 12.4. I'm puzzled as to why the new drivers don't work for me but do for so many others.