After 4 months im now finally able to run 4 GB on my udrp. For some reason the combo out of 2 D9GKx with 2 D9GMh would never work. I installed the test bios F9d today and i thought what the heck i give 4gb another shot and try with 3 gmh and 1 gkx. It worked.

But i can't seem to find stability at 1200 mhz. what settings do you guys use? i have a q 9550, the ep45-ud3p and two GB cellshock 8500 (D9GMH), 1 GB Cellshock 8000 (D9GKX), and finally 1 GB of Mushkin 8500 (D9GMH) installed. So far i'm able to run at FSB 412 @ DDR2-1099 5-5-5-15 with 2,16v.

I'm interested what subimings you use in a 4x1 gb combo on this board and if you advance any of the memory chanels. And voltages for the NB and the FSB vtt for 0C at 4x1 GB would be neat.