Squeck Posted July 4, 2015 Share Posted July 4, 2015 Hello, After many years (last OS X I used was Tiger!) I've installed Yosemite on my computer. Everything is working fine, but I'm having some problems with overclocking. I generated a SSDT.aml file using ssdtPRGen.sh and placed it into /EFI/Clover/ACPI/Patched, but the processor is not going over 3.40GHz (set to 3.80 in BIOS). I'm monitoring using Intel Power Gadget. I've then tried two ways (Ivy Bridge CPU, i5-3570k): 1. using AppleIntelCPUPowerManagementInfo.kext (AsusAICPUPM = true, DropOem = true, generate PStates = false, generate CStates = false): all P-States are logged in system.log, but the turbo ones are not. 2. using XCPM (-xpcm flag at boot, KernelPm = true, AsusAICPUPM = false (and kext deleted), ssdtPRGen.sh ran with option -x 1): no P-States logged in system.log (obviously, because there is no AICPUPM kext), turbo frequencies not reached in Intel Power Monitor. Anything else I can try / have done wrong? Do I have to patch my BIOS (Asus Sabertooth Z77) even if I'm patching both the kernel and the kext in Clover? My System Monitor says iMac13,2: is this correct? Can this cause a problem? Thanks! Link to comment Share on other sites More sharing options...
Allan Posted July 4, 2015 Share Posted July 4, 2015 Try use DropOem = true + ./ssdtPRGen.sh -w 3 And you can make some tests using different SMBios, like MacPro6,1 or MacPro3,1 Link to comment Share on other sites More sharing options...
Squeck Posted July 5, 2015 Author Share Posted July 5, 2015 Fixed. After examining the log, I found out I still had NullCPUPowerManagement.kext in my system. Removed it and everything works fine (now up to 4.4GHz, using the XCPM method!) 1 Link to comment Share on other sites More sharing options...
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