sorry to ask a question about an old processoer. i know most of u r thinking y even, but i can get it pretty cheap on ebay and i will not have to do anything new with my mother board, (btw do u guys think it will show a decent increase in performance, is it worth a few bucks?) What watts on a PSU is required for a Pentium 4 3.8GHZ single core processor?Thinking about upgrading my 3.0ghz Pentium 4 Prescott for a 3.8ghz prescott processor. However, I am not sure what kind a of Psu is required for a 3.8 ghz processor. Is 400 watts enough? i tried do research but i guess since this is a old single core processor no one cares for it but me.