DDR400 runnign at

[tno]

I upgraded my system from an 805 to a 945 and discovered that my fantastic ddr400 memory is now running at 266. When the memory was running with the 805 it stayed 1:1, so it would run ddr266 stock and then climb with whatever overclock i placed. But with the 945 it runs a 4:3 ratio, so ddr266. No memory speed adjustments are available, explicitly. The bios on this board is not particularly overclock friendly (despite claims on the box of such) so the only adjustments available are FSB and memory timings. Memory speed, ratio, all voltages, those are not available. Does anyone have any experience with this board and is able to help out?

Also, I worry that I'm seeing some vdroop. The 945 calls for ~1.225 and with this board under load I'm seeing 1.098 at times. I've seen lots of vdroop mods and was wondering if anyone had any experience with this board.

Thanks in advance, system specs below.

Tno
Pentium D 945 @ 3.4Ghz
Asus P5P800-VM (i865/ICH5)
Corsair XMS DDR400 (2x256) and OCZ DDR400 (2x256)
Gainward 6800GT Golden Sample
SB Audigy 2
WD 120 Sata x 2
Excelstor 40GB IDE
WD 80 IDE