hirion Posted February 11, 2017 Share Posted February 11, 2017 Hi Everyone, after years of impeccable work (thanks to the OSX Lattitude Forum) my Dell D830 gave up. I bought an M4400 and I have some problems with it, for which I need avdise. The specifications of the laptop: Intel P8700 4GB RAM, NVIDIA FX 770M, Mavericks 10.9.5 installed. System report says its processor is 1,6 GHz instead of 2,5 GHz. I updated Chameleon, Nullcpupowermanagement kext, etc., but it didn't help. I didn't make a DSDT.aml, I use one that I found on this forum, and I noticed that at every time I start the laptop, it makes an "NVRAM" note in the Extra folder. Thank you for your help in advance, Link to comment Share on other sites More sharing options...
Administrators Hervé Posted February 11, 2017 Administrators Share Posted February 11, 2017 It's probably just cosmetic, nothing to worry about and NullCPUPM will be of no use to that effect. In fact, you should not use that kext at all as full CPU SpeedStep is supported on C2D systems. If you want the proper CPU speed to be reported, ensure you've got: a FakeSMC kext tuned to the target Mac SMBIOS profile you use P States and C States generation enabled in o.c.B plist https://osxlatitude.com/index.php?/topic/2673-performance-tuning-with-fakesmc/ Post your specs and a zipped copy of your /Extra folder. Use HWMonitor to check your true CPU's throttling. Link to comment Share on other sites More sharing options...
Administrators Hervé Posted February 11, 2017 Administrators Share Posted February 11, 2017 CPU speed reporting, CPU SpeedStep and GPU PowerManagement all sorted now. Link to comment Share on other sites More sharing options...
hirion Posted February 12, 2017 Author Share Posted February 12, 2017 Problem solved! Thanks Hervé!! Link to comment Share on other sites More sharing options...
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