I mentioned those specific multi's as they are prooven to increase bclk limit on the blood rage. As I said you can turn on turbo to bring your true multi back to 21x, but if you try 18x or 19x as the set cpu multi you should gain a few bclk.

What temps are you at btw? If they're below 85 under prime95 just keep adding voltage. Some chips dont heat up as much as others at the same voltage. My 950 @ 4.675 / 1.48v runs cooler than my 920 @ 4.4ghz 1.45v.

Also some cpus just dont like a high uncore combined with high cpu core, hence my suggestion to go to 6x mem /12x uncore.

Just work out which particular part of the chip is failing and then youll know what to adjust.

You should be fine up to +350mv / 340mv on water or +250mv / +300mv on air. Above that temps will probably get lairy.