Ubuntu
linux package

  1. Bug #1071434
  2. Comment #0

Comment 0 for bug 1071434

Revision history for this message
Removed by request (removed3425744) wrote : Turbo Core doesn't work on an AMD Phenom II X6 1045T

I'm using Ubuntu 13.04 dev (64 bit) and my AMD Phenom II X6 1045T doesn't boost from 2.7 GHz to 3.2 GHz.

sworddragon@ubuntu:~$ uname -a
Linux ubuntu 3.5.0-17-generic #28-Ubuntu SMP Tue Oct 9 19:31:23 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux

sworddragon@ubuntu:~$ dmesg | grep powernow
[ 1.204050] powernow-k8: Found 1 AMD Phenom(tm) II X6 1045T Processor (6 cpu cores) (version 2.20.00)
[ 1.204074] powernow-k8: Core Performance Boosting: on.
[ 1.204110] powernow-k8: 0 : pstate 0 (2700 MHz)
[ 1.204113] powernow-k8: 1 : pstate 1 (2000 MHz)
[ 1.204115] powernow-k8: 2 : pstate 2 (1400 MHz)
[ 1.204117] powernow-k8: 3 : pstate 3 (800 MHz)

sworddragon@ubuntu:~$ cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies
2700000 2000000 1400000 800000

My BIOS is showing correctly 3.2 GHz as the maximum frequenzy and if I disable Cool' n' Quiet my frequenzy will be constantly 2705.104 MHz for all cores in /proc/cpuinfo without boosting to 3.2 GHz if a core is using 100% of cpu time.