I have heard that it's *possible* to run ram faster than the integrated memory controller is rated, but since I have also read that faster ram yields very small benefits in most cases, I would just go with the speed the IMC is rated for. (1333)
MY NB speed is 2500 on my gigabyte 990fxa-ud3. I'm not saying you cant go higher, but 2500 has been fine on my board. Can you just leave it in auto? (since all you need is the CPU multiplier)
If you have turbo and that other stuff disabled, ram speed and voltage would be my next two items to look at.
Try 1333 ram speed first. If that stabilizes things, great. (I prefer not to add any voltage unless I actually need to.)
However, if you still get BSOD, try a small bump in your V-core voltage. (The smallest increments your board allows)