This is a copy of my question which is also posted on the 3DMark03 Forms. You can read it there, http://discuss.futuremark.com/forum/showflat.pl?Cat=&Board=mo3dmark03&Number=2929476&page=1&view=collapsed&sb=5&o=0&fpart=1
, or below:
About a month ago, I built rebuilt my P4 system with a Radeon 9800 AIW Pro as my graphics card. Before I ever ran a 3DMark03 Benchmark, I overclocked the system via the FSB. I ran 3DMark03 a few days after this and got a score of 2432 3DMarks. Having nothing to compare it to, I believed this to be a fine score. About a week ago I bought Windows XP Pro and installed it. At the same time I completely reset the CMOS clearing any overclocking. After setting back up my graphics card and installing the newest drivers, I decided to run 3DMark03 to see what kind of a score I got with no OCing. I was surprised that it almost doubled my score to 4867 3DMarks. I didn't know why the score had jumped so much so I ran it again and got the same thing. I then decided to retry some of the old OCing techniques so I raised my FSB from 100 to 111. Immediately after doing so and restarting the system, I was back to a score of 2456 3DMarks. I am assuming this drop must have something to do with AGP Bus instability at higher FSB speeds. I reduced everything back to normal, reset the BIOS, cleared the CMOS, and even reinstalled all of the card drivers but I can't seem to get my scores back up into the high 4000s again. Please help my fix this problem and get back my high scores.
P.S. Would completly reinstalling XP Pro and everthing else like I did a week ago bring the speed back up? I am willing to go to such measures to get this fixed.