Does anyone know if DRI is fully enabled under the latest Nvidia and ATI closed source drivers when used with PCI-Express cards. I have set up a number of Linux boxes with Nvidia and ATI AGP cards and DRI has always accelerated nicely. However I can find little information on the web concerning how well DRI and PCIE play together. In particular, are there any limitations to DRI support of PCI-E currently that would severely degrade the performance of opengl. For example, the ATI fglrx drivers on a Radeon 9600-XT improve in glxgears frame rate from 200 to 2000 fps upon loading the fglrx kernel module. Will a similiar performance improvements be possible with DRI on PCI-E cards? Thanks in advance for any advice since I don't want to get stuck with horrible graphics performance under Linux just because DRI is AGP-centric. Jack