I had the system overclocked to 2.5ghz for a while when I had 2gb RAM in there, I added another 2 gigs of the exact same stuff, and started having posting errors occassionally, and the system would clock itself down. So today I tried to adjust the clocks and accidentally set something wrong - the cpu voltage to be specific. It froze during post VERY badly, with lots of '%' signs everywhere, etc. After powering it off for 10 minutes I started it up again and was able to get in bios - and set everything back to mobo defaults.
BIOS said it was running at 2.2ghz, and CPU-Z (most current version .. 1.44) said it was 1.8ghz. So I overclocked it - using a guide I found online, and being very careful/conservative, and got the system up to 2.7 ghz, easily. BIOS says 2.7ghz, CPU Z and Windows System tab both say 2ghz (each core). I clocked the CPU down to 1.7ghz, and CPU-Z read it as 1.2ghz.
Why is my BIOS reporting the desired speed, in this case 2.7ghz, and windows (CPU-Z) is reporting 2ghz?? I do not have nTune installed. AMD Cool'n'Quiet is disabled.
Please anyone? Any ideas? Did I fry my CPU and its unable to go above 2ghz now? Will buying a new chip be the answer? (which is fine if so.)
EDIT: cpu-z reports the cpu voltage at 1.33V even though I've manually set it to 1.45V in BIOS. Does this sound like the CPU is broken or the Motherboard?