mmmmhhhh i make a lot of try when I read about this problem.

Win 7 64 bit
I7 2600k
Saberthoot P67
8GB RAM
GTX 590

I ran in this framerate drop with 2600k @3400 mhz (Stock)
After this i return to my usual daily OC @4500-4700 mhz and no framerate drop happen.


Surfing the net i see that a lot of person that have an SSD have this problem becouse they disable pacaging file to preserve SSD lifespan, but without this sometimes with RAM heavily used they trigger this lag.