Originally Posted by Dragoran
You have a PCI-E card, AGP settings do not have any effect.
This is something I don't know much about, but I think PCI-e still uses GART and might be backwards compatible with AGP, using the same agpgart driver. OTOH it doesn't seem to support any recent chipsets. But for some reason I can't turn it off in my kernel. Well, something else to experiment with.