k15ctl

AMD Family 15h (aka Bulldozer) P-State, frequency and voltage modification utility

0. Warning

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USE THIS PROGRAM AT YOU OWN RISK. IT MAY DAMAGE YOUR HARDWARE.

1. What the program can do

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• It is intended for AMD Family 15h (aka Bulldozer) CPU's for Socket AM3+ and FM2
• It runs under Linux
• It can modify the P-States, i.e. alter processor and the northbridge frequencies and voltages;
• set / change the P-State;
• read out frequency and voltage information

2. Requirements

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• A Linux kernel with MSR support (Processor type and features --> /dev/cpu/*/msr - Model-specific register support)
• msr module loaded
• root permissions