Robust graphics booster in BIOS

[narcotic]

I have this option in my BIOS (gigabyte nf4), and I can set it to either auto, fast, or turbo, and I was wondering if anyone knows what it means, and what are the gains?

 

[Arky]

http://de.giga-byte.com/MotherBoard/FileList/NewTech/Tech_20041125_PX_RGB.htm

From what I understand, it's some kind of auto-overclocking through the PCI-E bus, but I have no idea of the actual performance gains. I guess you should do some benchmarks to test that function