There are two 9850 models and two different motherboard revisions 1.0 and 2.0. Which ones do you have? If you run CPU-Z what BIOS revision is listed on the mainboard tab?
http://www.cpuid.com/softwares/cpu-z.html
CPU part number HD985ZXAJ4BGH
Box part number HD985ZXAGHBOX
Thermal Power Design 125 Watts
CPU part number HD9850WCJ4BGH
Thermal Power Design 95 Watts
The CPU part # is the HD9850XAJ4BGH 2.50 Mhz,
4 MB Cache,
2000Mhz (4000MT/s) FSB,
Agena, Quad-Core,
OEM, Socket AM2+, Processor,
None of which appear to correspond with any of your #'s because of the Z being in place of the 0?
The mobo is Gigabyte MA78-GM-US2H revision1 which according to Gigabyte is chip compatible.
The processor is running at 1.3 volts according to the Bios which is what the chip is supposed to run at and the voltage is set to automatic.
CPU-Z revision is indicating I have no revision it says "revision 00"
So once again I'll reiterate, Windows 7 says the cpu is running at 2.5 Ghz, CPU pro says it's running at 2.585 Mhz but, the latest version of CPU-Z says its running at half that speed.
Why does CPU-Z think it's only running at half speed when CPU speed pro says otherwise?