ASUS Maximus II Formula - new P45 king?

[Gendo]

I am finding it almost impossible to get 666 MHz (DDR2-1333) bench stable. My CellShock GKX & TeamGroup GMH sticks all top out at 660MHz, and my Team Group can do 666MHz max screen but very unstable. More vdimm is not helping, neither is the DDR2 CHA/B ref or NB DDR Ref voltages.

Has anyone got over 666MHz on this board?

Asus need to improve the ram overclocking ability. The UD3P leaves the M2F in the dust in this regard.

Yeah I have, slightly This was 2 months ago so it must have been one of the first bioses out there. I don't have the board anymore so can't check it either. But yes 666+ is possible.



Edit: I know it says ddr3 but it is the m2f. This was when cpu-z was stil giving errors with P45 so yeah that proves it's old.
I believe the bios version I used was 0503, not 100% sure but looking at the list of bioses that version rings the most bells
100% sure my bios was 0802 or older. (the roms are still on my usb)

Edit2: And about the NB problem you're having: I've noticed that going higher than ~1.43v causes instability and lowers fsb overclocking. But trust me, 1.43v is enough for both high fsb and high mem clocking. Proof: http://hwbot.org/result.do?resultId=778618