i2600k overclocking help

[Flak]

I'm trying out a new beta bios for my z68x-ud3h-b3. I still can't go over 4.6ghz at any voltages for whatever reason. I am however, small ftt stable over 48hrs @ 4.6ghz with a much lower voltage then before. And I can finally use dynamic vid. But I can't seem to get blend stable.

Ram is running at it's default (which it was before as well), xmp profile1, 1600, 8/8/8/24. I keep notching dvid up but it hasn't gotten stable yet in blend test.
current voltages
dvid = +.95
qpi = 1.16 (16gb of ram, all slots full)
cpu pll = 1.75
mem = 1.510
Everything else is on auto.

Anyone have any ideas?

 

[Darkleoco]

Have you tried running your RAM at 1333 when running blend to test if it is your CPU that is unstable? I know I was having issues getting even 4.5 stable due to a significant temperature and voltage increase needed to even attempt it. I found that my RAM was what was giving me most of the trouble with instability so I currently have it staying at 1333 until I can be bothered to tweak it back up to 1600, I'm on a P67 board but the principals should still be the same anyway.