Hey people, I have a amd k6-2 running at 400mhz, with 128mb of ram and 4mb internal video on sis 530. i want to build me a new computer and was wondering if those new xeon 2.2ghz cpu's are worth there money. when they are installed do they both combine and run at 4.4ghz or do they switch off when one gets hot? or are the amd 2000mp cpus better? thanks for your replies