Benchmarks: Encoding, Cinebench and KribiBench

It's a tie in our wav encoding benchmark... a CPU limited test, then?

Again very little in it for video encoding with a 1% lead for the RS482-M.

In Cinebench the RS485M-M platform has the edge by 3%.

Once more it's a close one, AM2 delivering no tangible performance benefit over Socket 939 in our tests.
