Well, I play World of Warcraft and don't watch the core speeds constantly--but when I do they are in the 3000s generally. But after playing for a couple hours I can see the max core speeds are showing in the 20,000s Mhz. So HWMonitor is showing the max at very high speeds. But this has only started in recent months, and (on an aside) the computer has also been crashing at least once a week, once even four times in one hour. I have reinstalled Windows three times thinking that would stop the crashing--which has worked to stop the crashing temporarily. The Bios is also an older one as the latest one does not play well with my system--and I have not changed the core speeds (as in overclock settings in the Bios) in any way.