[ Thanks to Phoronix for this link.
“Last year we had taken an in-depth look at ATI’s PowerPlay
technology upon the support within the Linux fglrx display drivers.
Now that Fedora Core 5 has been out for some time, and there have
been quite a few monthly releases since that point, we are now back
today as we re-examine ATI’s PowerPlay using once again the
Mobility RADEON X300. In this examination, we will also be using
additional benchmarks beyond what was done in our original
benchmarking fiesta, and we will be examining its power consumption
when using the AC adapter and simply not the battery. Continue as
we examine this technology once more, and get a better
understanding if this implementation is for all mobile