http://hardware.slashdot.org/article.pl?sid=05/10/22/0714240
Kasracer writes “Web Sites The Register and GamePC received several of the new dual-core processors from Intel, dubbed ‘Paxville’, and ran a battery of tests on them. What did they find? From the article: ‘There’s no doubt about it, Intel’s dual-core Xeons are their most power hungry Xeons to date … Even when idling, two dual-core Xeons consume nearly 400W of power at any given time, which is amazingly high, even by Intel’s standards … their new dual-core chips (while powerful in their own right) simply are bested across the board by AMD’s dual-core Opteron processors. Even worse, the Opterons typically perform much better while running at slower clock speeds and only having half the amount of on-die L2 cache to utilize.’”