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12-23-2010, 10:58 AM
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Jaguar
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Join Date: Sep 2010
Posts: 35
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I've been looking into it more. I'm wondering if I replaced the CPU microcode in bios version 77 from EVGA with the microcode from a Gigabyte X58 board's bios if that would fix it, but I'm not sure if that's really the problem. This is a copy of my post on insanelymac:
On EVGA's website, they list these differences between bios 44, which breaks AppleIntelCPUPM support, and SZ2Z, which enables it:
Quote:
44 Updates:
Supports 32nm Desktop CPUs
Added "Turbo Performance" option (may boost performance if enabled)
Fixes 1866MHz Memory Ratio
SZ2Z Updates:
Added "Reserve RC for Bridge" - Enables resources for 5 VGA's
Added High Precision Event Timer
Disables PS2 keyboard in device manager if no PS2 keyboard present
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To me, this suggests three possible causes.
1. The CPU microcode
2. The "Turbo Performance" option
3. Notice how the naming conventions of the bioses change from SZxx to just two digits. Does this mean that perhaps they did a complete rewrite and that the cause of our problem could be something unrelated to the added features in version 44?
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