http://www.intel.com/support/processors/pentium4/thermal.htm Has some data on Intel heat dissipation for p4's http://www.intel.com/support/processors/pentiumiii/thermal.htm#5 for pIII's http://www.amd.com/us-en/assets/content_type/white_papers_and_tech_docs/24309.pdf has got the info for XP's on pg 35(youl need the acrobat reader). http://www.amd.com/us-en/assets/content_type/white_papers_and_tech_docs/23792.pdf Athlons(pg33) http://www.amd.com/us-en/assets/content_type/white_papers_and_tech_docs/24310.pdf http://www.amd.com/us-en/assets/content_type/white_papers_and_tech_docs/23802.pdf Durons(35 and 31 respectivley) Took some diggin on the amd site, but I found the tech docs. For the amd's that is all you will ever need to know and more about them. Insofar as the Intels you are going to have to search their site, it is easier to find docs on the intel site.
