Your motherboard, and by extension, BIOS, also has a lot of control over how your CPU performs. After being frustrated for months thinking my CPU was maxed out, I played around with these BIOS ...
XDA Developers on MSN
Don't overlook these BIOS power settings for overclocking and performance
BIOS power settings that can significantly boost your CPU performance and overclocking potential, including PL1, PL2, EDC, and TDC.
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