Regarding to initial Red Jhon's post:
I use 4930k for 2 months now, and tested every single RIVE BIOS with Ivy-E support (including 0020-0024)
I cannot confirm freq bug. A also use 4.6GHz overclock with offset vcore voltage and I actually have my CPU running this freq as long as any CPU load exists.
About memory Rampage tweaker mode - yes, it's still buggy, i have to leave it on auto for now.
About OC requires more vcore on latest BIOSes - can't confirm that. I made some prime95 tests with every BIOS and my CPU approaches in the same way.
It seems that you're running Win 8 (or 8.1).
Try to set high performance power scheme (make sure both min and max CPU states are set at 100%) and see what happens.
Check your VRM settings, try to use 46 as non-turbo multiplier.