Hi Axel, > > Yup, I guess you have to live with that. Have you tried reading out > > the > > MTRR flags to see if they were already setup by the BIOS? Or does > > BeOS > > reset them some way? > Next up testing this ;-) I'll keep you posted on my findings. I do > not Here are the results: after setting up MTRR for the graphics memory throughput speed quadrupled!!. This is the confirmation that the BIOS does NOT set this up. I'll try to complete the MTRR VIA driver a bit and probably post it on bebits then, it's based on the Be R3 P2 version :-) Bye! Rudolf.