I Just installed the processor of the title and I am more than satisfied, but in the Windows desktop it never goes below 3.4 ghz 123.9w. I have tried with Windows power plans, but unlike my previous micro (an athlon 2), now I can´t manage the load percentage. The only thing I can change is the ¨System Cooling Directive ¨, but it made no difference. I had also tried enabling disabling ¨cool and quiet¨ and clearing the cmos to no avail. Finally the temperature is fine, always between 30-34 degrees, and the cooler runs at 3000rpm. The motherboard bios is already updated to the last oficial one .Any help will be appreciated. Thanks. PS: I didn´t reinstalled windows when I changed the processor ¿ Could this be related to the problem? My pc: Phenom II X4 firstname.lastname@example.orgGhz / TA790GX A3 + / ATI 5770 Vapor x 1GB DDR5 / 4GB Gskill DDR3 1333 CL7 Ripjaws (2x2GB) ) / two Samsung hdds:1 terabyte and 250GB, / OCZ StealthXStream 600w. Running windows 7 64bits.