Long story short I have: i7 920 D0 Stepping Gigabyte X58A-UD3R Motherboard 2X EVGA GTX460 768MB Graphics Card 3X2GB Crucial Ballistix DDR3-1600 Seagate 320GB SATA HDD Tuniq Extreme 120 Cooler Issue: Random lock-ups with stock clocks on CPU to a point where I can't get it to boot. The GPU is OCd with 800/1600 clocks. The very same GPU's gave me the same symptom on another rig That rig now has 2 GTX260's and it's running fine. The CPU and RAM were on a X58A-UD7 mobo that I recently sold and they were fine. So is it the CPU, motherboard, or the video card?