Comment 7 for bug 877877

Turbo Core may actually be working on the Phenom(tm) II X6, but with the higher CPU frequency not indicated by any of the normal interfaces - see below.

The A6-3400m "Llano" CPU has Turbo Core 2.0 and may need a 3.1 kernel. Testing of an AMD FX-8150 "Bulldozer" CPU with Turbo Core 2.0 shows that the higher CPU frequency is not indicated by any of the normal interfaces, but it is definitely delivering an improvement in performance in some of the benchmarks. It was shown to be mostly beneficial for single-threaded tests or workloads that do not stress all available CPU cores/modules. When all cores/modules were under load, there was normally no difference in performance. The system power consumption and CPU temperature also rose noticeably with this feature enabled, suggesting the CPU is running at higher frequencies. See http://www.phoronix.com/scan.php?page=article&item=amd_fx8150_features&num=1 for the full details.

A PPA of the 3.1.1 kernel can be found at http://kernel.ubuntu.com/~kernel-ppa/mainline/