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Hi. Since getting CPU power management working on my Acer v5-171, i went back to the desktop that's been running Mountain Lion since day 1. At boot and in about this mac, cpu is reported as i5 running at 2.93 GHz. Installed new FakeSMC and HWmonitor because I always thought the machine could be a bit sluggish. Suspicions are confirmed by the cpu frequencies. I was using Generate P states and C states in org.chameleon.boot.plist but HW monitor shows two states - 1.2GHz idle and 2.13 GHz at load. Doesn't matter how many things I run it never goes above 2.13 GHz. Intel specs show the i5-760 should have turbo of 3.33 GHz. I'm using chameleon wizard iMac 11,3 smbios.plist which matched my i5-760 CPU and ati video card. I tried using ssdtPRGen and put in max frequency as 3330 and TDP of 95w (from the intel specs). It generated a bunch of states but when I drop this into /Extra and modify org.chameleon.boot.plist accordingly (to remove the generation of P and C states and Drop SSDT) HWMonitor still gives me the same readings. iMac:Desktop mark$ ./ssdtPRGen.command 3330 95 sdtPRGen.sh v6.6 Copyright © 2013 by Pike R. Alpha ---------------------------------------------------------------- Warning: Unexpected brandstring > "Intel® Core i5 CPU 760 @ 2.80GHz" Processor Declaration(s) Found in DSDT (ACPI 1.0 compliant) Generating ssdt_pr.dsl for a iMac11,1 [Mac-F2268DAE] Unknown Core i5 processor [0x106E5] setup [0x0601] Override value: Max Turbo Frequency, now using: 3330 MHz! Override value: Max TDP, now using: 95 Watt! Number logical CPU's: 4 (Core Frequency: 2933 MHz) Number of Turbo States: 3 (3033-3330 MHz) Number of P-States: 18 (1600-3330 MHz) ./ssdtPRGen.command: line 635: [: -eq: unary operator expected ./ssdtPRGen.command: line 706: [: -eq: unary operator expected ./ssdtPRGen.command: line 2068: [: -eq: unary operator expected ./ssdtPRGen.command: line 1022: [: -eq: unary operator expected ./ssdtPRGen.command: line 1044: [: -ge: unary operator expected ./ssdtPRGen.command: line 1044: [: -ge: unary operator expected ./ssdtPRGen.command: line 1044: [: -ge: unary operator expected Injected C-States for CPU0 (C1,C3,C6) ./ssdtPRGen.command: line 1457: [: -ge: unary operator expected ./ssdtPRGen.command: line 2092: [: -ne: unary operator expected Intel ACPI Component Architecture ASL Optimizing Compiler version 20130117-64 [Jan 19 2013] Copyright © 2000 - 2013 Intel Corporation ASL Input: /Volumes/Data/Users/mark/Desktop/ssdt_pr.dsl - 154 lines, 4494 bytes, 29 keywords AML Output: /Volumes/Data/Users/mark/Desktop/ssdt_pr.aml - 942 bytes, 11 named objects, 18 executable opcodes Compilation complete. 0 Errors, 0 Warnings, 0 Remarks, 0 Optimizations Is this something to do with the DSDT i originally used from TM? I've attached it here incase anyone can see this issue. Thanks, sem DSDT.aml.zip ssdt.aml.zip