Benchmark Results: Audio And Video Encoding
Apple iTunes has never shown us the true benefits of multi-core processing, so the current system’s six-core CPU wasn’t able to overcome its quad-core predecessor. AMD’s lower IPC (instructions per clock) efficiency further hinders speed by around 25% when both systems are overclocked to similar 4 GHz frequencies.
Freeware is often first to the table with the latest threading optimizations, and HandBrake shows the clear performance advantage of AMD’s six-core architecture.
Proving an exception to the above statement, the commercial DivX codec takes advantage of AMD’s extra cores, while the free Xvid codec does not.
We’re not certain whether MainConcept effectively uses all six of AMD’s cores, but with four-core (Intel) and six-core (AMD) results separated only by clock speed difference, it appears to be limited.