Performance during Audio and Video Transcoding
Transcoding of any type of media content is the key skill of the new inexpensive quad-cores from AMD. In fact, there is nothing to be surprised about here. In these tasks the entire load is put over the computational resources of the system, while the memory subsystem performance becomes secondary. As a result, Core 2 Quad is defeated even by Athlon II X4 620 in popular video codecs, not to mention the top model of course. Things look a little different in iTunes, but it can be probably explained by the specifics of this program that transcodes audio files only in two threads.