I have FX57 (0513MPMW) and FX55 (0512UPAW) CPUs. With Dry Ice I'm able to run FX57 @ 3622 MHz (Heat spreader off) but I haven't been able to run it in 3D above 3650 MHz even with LN2.

Damn, I need a cascade to test CPUs

PS. I'm looking for FX CPU which can do +3800 MHz with LN2