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ML GM slower than Lion on the same machine (i7-2600k)

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I am having speed issues with Mountain Lion. Is anyone else?


I have an i7-2600k at 4800ghz on an Asus P8Z68-V Pro, patched bios 3402. Geekbench64 rates me at over 17,000 in Lion 10.7.4 and only 11,000 in Mountain Lion.


Weird thing is I have another rig : Asrock Z68 Extreme 4 with an i7-2600k that Mountain Lion has no problems running at 4800 GHz, and I'm getting Geekbench64 scores identical to Lion.


I'd be happy to use speedstepper to do the necessary patching : is one available for ML GM?

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I have a couple boards, the Asrock Z68 Extreme 4 and the Asus P8Z68-V Pro.


The Asrock works perfectly.


The Asus works but I can't get speedstepping to work ... so my 4.8 ghz overclock just sits at 3.4 ghz.


Both use an Intel i7-2600k.


I used Myhack to install both.

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