On Friday 03 December 2010, [email protected] wrote: > Hi, > > I googled this and found some other people asking the same question... > But I didn't find the answer. > > I am using linux kernel 2.6.36.1 vanilla to run on a AMD Phenom X6 > 1090T/ASUS Crosshair IV Formula system. > > I enabled "ondemand" CPU frequency scaling givernor in the kernel and > "Cool'n' Quiet" in the bios of the board. I also enabled "Turbo Core" > in the bios (which says the 3200MHz is max and 3600 MHz in case of > Turbo Core being used.. I disabled C1E. > > After Linux is booted (AMD64!) and idled, the CPU is running at 800Mhz > (nice!) and at 3200 MHz when system is under load. > > But: > With prime I put exactly two cores under load, so normally Turbo Core > would kick in...but the clock of those both cores show 3200MHz instead > of 3600MHz.... > > How can I make use of the Turbo-Core feature unde Linux?
and you looked at the speed using cat /proc/cpuinfo? Because the mhz displayed there are misleading. cpuinfo does not show at which speeds it is acutally running if there is any oc/uc involved. An overclocked cpu might show 2Ghz while it is running at 2.3GHz See: http://www.phoronix.com/forums/showthread.php?t=26065
