Great apple propaganda, but my Opteron 280 dual/dual already smokes it running fedora core 4 with kde 3.5 as the desktop at 1/2 the price.
This is not Apple propaganda... look at the source. This came from PC Magazine, not MacWorld.
What application are you using on Linux that renders using Cinebench as a test? Cinebench does not even list a Linux system in the Cinebench results.