Much thanks for your write-up guy,
Since 3 years I've never quite got this right, but now I've SpeedStep + TurboBoost at per-core-level. My electricity bills is gonna shrink a bit
from ~80w CPU package (stuck @3.2) I'm now at 30w in Idle mode
I must admin I had to retry periodically (every 6 months) until I got this right lol.
I have Clover and a P9X79 (normal) with latest BIOS and 3930k.
All steps are done as explained, I had to use the Perl Script, no luck with Clover boot-up patching (but I didn't insisted much).
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Also no luck in resolving an old timer "bug" as I'm not sure it is related.
I have bad mono-core performance in Geekbench with my sandy-bridge.
On windows I get normal scores.
On OS X i get 2100 / 15000 @ 3200 fixed.
Now with CPU advanced management supported I get
3133 / 18353.
As you can see multi-core is on par with same processors.
But I have yet to understand why my mono-core score is so BAD.
No problem in Windows (i get ~4200 if i remember)
And I remember a times when I booted up on a fresh OS test install and it did shows normal scores...
I find this odd, not a usual problem :/