Copyright © 2000 Dennis Huddleston and Quake 3 Tweak Arena. All trademarks used are properties of their respective owners.
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Last Updated 16th January 2001
Through looking at the many guides to optimal BIOS settings around the web, as well as by personal experience, these are the settings I find work best for me:

Video BIOS Shadow = DISABLED
Video BIOS Cacheable = DISABLED
xxxxx - xxxxx Shadow = ALL DISABLED
PCI/VGA Palette Snoop = DISABLED
AGP Aperture Size = 4
CPU to PCI Write Buffer = ENABLED
Delayed Transaction = ENABLED
Passive Release = ENABLED
Spread Spectrum = DISABLED
System BIOS Cacheable = DISABLED
Video RAM Cacheable = DISABLED
External Cache = ENABLED
VGA Frame Buffer = ENABLED
VGA Data Merge = ENABLED

ALWAYS write down your original settings BEFORE you change them just in case you have any problems with these particular settings.

Remember, not all these settings may be available in your particular BIOS. You can download a program called "Tweak BIOS" which allows you to modify all these options and more. Get it from
Here.