An unfortunate audio processing issue for Nehalem Mac Pros
"Apple's latest Mac Pro, jammed with multicore Nehalem-based Xeon processors, is designed to be a computing beast with power to spare for the most demanding tasks. Since the current Mac Pros became available in October of 2009, though, numerous users have reported a glitch, which appears to be related to audio processing, that causes those Xeons to run much hotter than expected. The problem also saps a surprising amount of performance as well."
"....Users in Mac Forums and Apple Discussions have performed numerous tests that show the issue is real, only affects late-2009 Nehalem-based Mac Pros, and only shows itself under Mac OS X. Previous Mac Pros do not exhibit the same symptoms, nor do MacBook Pros...."
more....
http://arstechnica.com/apple/news/2010/02/nehalem-mac-pros-take-20-performance-hit-when-playing-audio.ars[/bad news]
