"I figured out where the fastwrite is and changing that does more bad than good: it completely lags out my computer. I think the problem is the 8X being enabled and not the 4X. I recall seeing my friend change it but he can't remember where; I can recall BIOS though"
I know i can set the AGP multiplier in bios on my board, other boards vary though (on my last oem board i couldn't). Flashing the bios may ad that feature if it isn't available now for yours.
My mobo is agp 4x to begin with. I have an msi kt3ultra2 with an athlon xp2100 and a 9700pro. I was doing some experiments today after reading about all these issues (none of which my machine exhibit). Turning fastwrite on or off, either through the ATI control panel and/or through bios (my board has this option) makes little or no difference at all in 3dmark 2001se or UT2003 benchmark scores.
In ut2003 benchmark, with fsaa at 8x and AF at 16x full time, not aplication set, my 1024x768 and 1280x960 scores are always identical whithin one fps (59.whatever for botmatch), and my 1600x1200 score is one fps less than those (58.whatever for botmatch), so my system is aperently CPU limited. Also i keep hearing people say to switch from hardware+EAX sound to software sound for better scores. This never had any effect whatsoever on my scores with my radoen 8500 or 9700pro, both run with an audigy platinum.
My 3dmark 2001se scores are in the mid 13,000 range with fastwrite on or off.