HELP AMD 6400+ VISTA 64-bit

Hey guys,
I am running vista 64 ultimate, i have a AMD 6400+ 3.2ghz processor, but my vista specs tell me that my cpu is only 2.0ghz. Does anyone else have this problem? I used "CPU-Z" and "N-Tune" and both have my clock rate @ 2000mhz.

I tried changing some BIOS settings, CPU frequency was set to auto, It was on 2000mhz X10, so i changed it to 3200mhz X16 and still nothing!!!

ANY help would be appreciated,

thank you for your time.

FIXED!!!!

new chip was not supported, Updated BIOS, running at 3.2ghz a core now :)

hi i have

vista 32 CPU: AMD 4600+x2 Motherbord: Msi k9n sli platinum GPU: 8800Sli RAM: 2G corsair 800Mhz My motherbord Bios v. 1.0

and i want to buy AMD 6400+x2 what i need to do to update my bios.

please help me?