Right I am looking for a bit of advice!

I have my i7 930 overclocked with a 212BCLK - 100% Prime95/LinX stable.

Increase the BCLK to 213 and the BIOS is slightly laggy (If I bring the multi down to 12x however, it doesn’t lag at all).

Increase the BCLK to 214+ and it just refuses to post.

I have played around with almost every setting, the only one that got me anywhere yesterday was the CPU/IOH clock skew. I somehow got 215BCLK to post.

It's really bugging me because my temps and volts are fine atm (1.28V for 212/4.03GHz - max 70C~)

When the board posts the voltage LED things get stuck on DRAM. However even when loosening the timings to CAS9 and downclocking to the lowest available DRAM multi it doesn't make any difference.

Atm the board just halts on the DRAM post, and the GFX fan goes crazy. By putting the PWM frequency on 750KHz the GPU fan stops going crazy but it still won't post.

So far the only settings that have made ANY difference are:

IOH clock skew
CPU clock skew
PWM frequency


Also adding to this mystery, putting any of the IOH/ICH volts above default fails the post above 212BCLK(213 won’t work either), along with putting the QPI above 1.35V~.

Confused.com