[Beowulf] Engineers boost AMD CPU performance by 20% without overclocking

[Mark Hahn]

> http://www.extremetech.com/computing/117377-engineers-boost-amd-cpu-performance-by-20-without-overclocking

afaikt, they discovered that using the cpu to prefech for the gpu is a win.
this is either obvious or quite strange - the latter because one of the 
basic principles of gpu programming is to have several times more threads
than cores in order to let the scheduler hide latency.