Comment 35 for bug 1071434

I can confirm that this is a general problem. I have an AMD a6-3400m processor. The base max speed for this cpu is 1.4ghz, and with turbocore active the max speed should be 2.3ghz... This means that even under the heaviest load, the max speed reported is 900mhz less than what should be reported. This chip is a quad core and that could roughly be equated to 3.6ghz of overall performance not being reported at all.

Command:
uname -a ( This kernel is from Ubuntu 12.04/precise with xorg edgers installed)

Output:
Linux ken-K53TA 3.5.0-030500-generic #201207211835 SMP Sat Jul 21 22:35:55 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux

Command:
dmesg | grep powernow

output:
[ 1.517070] powernow-k8: Found 1 AMD A6-3400M APU with Radeon(tm) HD Graphics (4 cpu cores) (version 2.20.00)
[ 1.517098] powernow-k8: Core Performance Boosting: on.
[ 1.517142] powernow-k8: 0 : pstate 0 (1400 MHz)
[ 1.517145] powernow-k8: 1 : pstate 1 (1300 MHz)
[ 1.517147] powernow-k8: 2 : pstate 2 (1200 MHz)
[ 1.517149] powernow-k8: 3 : pstate 3 (1100 MHz)
[ 1.517152] powernow-k8: 4 : pstate 4 (1000 MHz)
[ 1.517154] powernow-k8: 5 : pstate 5 (900 MHz)
[ 1.517157] powernow-k8: 6 : pstate 6 (800 MHz)