What does TurboGL drivers do? (technical stuff)

[Korben]

I have another problem with TGL. As far as I know, you should set AGP-aperture size to 256 MB (at least for the really texture-intensive games). Now my problem is, that this setting fills up my 128 MB of RAM. So games, like Ultima 9 or UT in D3D-mode, which really need lots of RAM, perform very bad. Does anybody know how to prevent this ? Is there any way to set the AGP-size within Windows ? I don't really want to reboot everytime just because I'm feeling to play some Q3A....

thx