about which tools correctly identify boosts, see here.I have recently replaced my A4-3300M with a A8-3500M. However, even with fglrx, there appears to be a bug if you intend to use Dynamic Power Management.įor a bit more of explanation e.g.I have filed a bug report over at but the question remains whether it will be easy to have the kernel initialise the GPU just for the sake of the boost (if my assumption about the root cause is correct). And properly here means that you must use the official dirver not even the free radeonwill do the trick. It seems that the GPU on the chip will not contribute to the decision unless it gets initialised properly. I presume that the reason is that Turbo Core is a decision made by the APU itself, based on several criteria such as power dissipation/TDP. If the kernel does not have the ATI/AMD 'fglrx' module loaded, the APUs appear to stick to the non-boost/regular frequencies.And there seem to be two issues regarding those with an integrated GPU. Turbo Core, however, is a feature available on AMD CPUs with and without integrated GPU. I'm glad I had a closer look at this.ĪMD Turbo Core is supposed to be enabled by default in all current Linux versions. Such as the ondemand governor potentially being worse than performance (at least with the Richland A10-6700) and fglrx apparently using some questionable tricks to improve short-term boosts, abruptly having to compensate for that in the long run.

I published a detailed analysis over at which contains (at least for me) a few surprises. If you run Debian, or if you run Ubuntu and the above is not true for you, please refer to How to set up a Debian system (focus on 2D or console/server) with an AMD Turbo Core APU for maximum energy and computing efficiency? Which means that with Kernel 3.16 or later, Turbo Core should work right out of the box with radeon in many cases. The value of bapm is set to 1 by default for Kaveri, Kabini and desktop Trinity, Richland systems (see here), resulting in Turbo Core being enabled. The value for bapm can be provided as a module parameter (see here).

How to enable turbo boost amd a8