New tool: AmdMsrTweaker

[kink]

Hi guys,

I'm working on a simple successor to PhenomMsrTweaker. It's a console app, therefore no GUI and no Windows service anymore. I dropped custom C&Q since default C&Q is supposed to work quite well for newer CPUs. So it's only designed to tweak the P-states and supports newer CPUs.

Required: AMD CPU starting from K10 (Phenom/Phenom II, Llano, Bobcat, Bulldozer), Windows

Quick guide: I'm too lazy to write a complete guide just now, so please take a look at the following examples:
AmdMsrTweaker
=> no parameters: info
AmdMsrTweaker P0=12.5@1.4 P2=8 P3=@0.85
=> modifies P0 (multi=12.5, VID=1.4V), P2 (multi=8) and P3 (VID=0.85V)
AmdMsrTweaker P2
=> switches to P2 (note: if C&Q is enabled, the cores are likely to switch very soon to another P-state, so this makes only sense if C&Q is disabled or if the high-performance power-profile is active)
AmdMsrTweaker Turbo=0
=> disables the turbo (use 1 to enable it)
AmdMsrTweaker APM=0
=> disables Application Power Management (TDP limiting) for Bulldozer (use 1 to enable it)
AmdMsrTweaker NB_P0=8@1.3 NB_P1=@1.1 NB_low=3
=> modifies the NorthBridge P0 state (multi=8 (multis only supported by Bulldozer), VID=1.3V), its P1 state (VID=1.1V) and uses NB_P0 for all P-states < 3 and NB_P1 for all P-states >= 3
You can combine all parameters above.

It's currently in alpha state, I've only tested it locally on my Phenom 9950, so please provide feedback and make sure to use a tool like AMD OverDrive to see what's actually happening. Here are two screens (ever seen a Phenom running at 0.5 x 250 = 125 MHz? )




Download!
Source code

Greetz,

kink