u will need to look in mags to track down the differencebetweeb amd and intel ie they will be a chart that will show what amd is equal to and intel chip speed wise.
On the graphics front GET THE ATI RADEON 128 9800 PRO as I have spent the last 3 days reading up and this one rocks. A bit more but it will be worth it. It is the one I am buying with my system and an intel 3.00ghz.
Look here and compare