hello all i am pretty new with the internals of my desktop so if you need more info to help me out let me know. i know its not the best but i have a gateway right now and was looking into a possible processor upgrade. what i have right now is a pentium 4 1.9ghz 478 pin. as for the mother board all i can tell you is el paso 2 if that means anything i looked but could not find on intels website. i searched trying to use the bios # but all i saw on intel.com was 65a mine is pt84510a.15a. oh yea its a 400mhz system data bus if that helps. again i appreciate your time and patience with me as i get to further understand what i am getting myself into.