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Windows 7: Need help identifying certain registry entries

04 Dec 2010   #1

Win 7 64 bit professional
Need help identifying certain registry entries

I recently came across the following registry tweaks for improving in game performance. Before messing with them, I am curious if anyone can identify the purpose of these registry entries.

Type regedit and change:


Change on both the "Start" from 3 to 4. Only side effect is the increase of temperatures by a couple of degrees.

Reboot and your benchmarks should be higher.

Thanks in advance.

My System SpecsSystem Spec
04 Dec 2010   #2

Windows 7 x64 pro/ Windows 7 x86 Pro/ XP SP3 x86

I think those registry settings control the processor's power saving states. Setting start value to 4 disables those and consequently disables the cpu's power throttling. Basically, it lets you run the processor at max performance all the time, so game performance may improve. Naturally, this will make the processor consume more power, generate more heat and run fans noisily all the time.

As with any other reg mod, there may be unintended consequences, so proceed with caution. Have a backup of the registry, create a system restore point and if possible image your system.
My System SpecsSystem Spec
04 Dec 2010   #3

Win 7 64 bit professional

Thanks Bill2. That makes a lot of sense. I have speedstep disabled in bios and I suspect altering the settings will make no difference. Appreciate the feedback.
My System SpecsSystem Spec


 Need help identifying certain registry entries

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