OCing 3570K Advice

[nubonamission]

At the moment I get prime fails, variable lengths of time, and blue screens. Can take quite a while to blue screen 0x124.

I'm at 4.6 GHz and would like to be able to make it stable at this speed.

In BIOS voltages are set as (Mobo: Z77-D3H):
Vcore: 1.325v
Vtt: 1.08v
PLL: 1.65v

RAM (GeIL EVO Leggera 8GB 12800C9):
VDIMM: 1.5v
Timings: 9-9-9-28

If I drop the Vcore to say 1.31 it will promptly blue screen 0x124 (when P95 is started).

My question really is what to try changing here. I am going to ramp the VCore to 1.33 and try again, but other than increasing VCore is there anything else I should try?

 

[sadbuttrue]

If it's BSODing at 1.31v and getting into Windows at 1.325v, you'll need at least 1.35v for long term stability. You're simply sitting to close to the edge of stability and need to push your voltage beyond that level. I wouldn't be surprised if you need upto 1.4v to remove all stability issues tho.

 

[nubonamission]

I changed the Vcore LLC to "Turbo" which according to this (http://www.overclock.net/t/1247413/ivy-bridge-overclocking-guide-with-ln2-guide-at-the-end) means "the LLC should be set to Turbo for a slight droop, or Extreme for no droop at all."

I wonder if this is going to help with my overclock? I don't know what the accuracy of the CPU-Z voltage readings might be but since changing the LLC to turbo it now shows 1.344. Wheras it was showing 1.272 or so before. Temps have also increased (under load) to mid 70's max 78C.