I am guessing you are using the stock memory multiplier of 10x ?
If so you are overclocking your RAM and dropping the timings by alot and reducing the voltage probably causing memory instability.
Set your memory manually to 9-9-9-24 and use 1.64v
Could roll back base clock to 160 as well so your memory is at a perfect 1600mhz because memory doesn't overclock well.
Thanks! I think this maybe the issue. I enabled XMP profile and so far no crashes yet (I'll still need to test this for a few days). I'm pretty new to Core i7 (moved up from C2D) so I'm not well aware with the memory OC issues. I was wondering why even though I had my vcore so high, I still couldn't attain stability.
I'll let you guys know how it goes.