Q9400 / Maximus II Formula @ 4.0 ghz (Push it further?)

[MacAllah]

Dudes,

 

If you're trying to OC a Maximus II Formula mobo, here's how I got it to 3.98 stable (4.00 unstable).

 

Here are my basic pieces:

 

ASUS Maximus II Formula (P45 chipset)

Intel Q9400 2.66 ghz (stock)

Tuniq Tower 120 CPU cooler

OCZ Reaper DDR2 1066 RAM

Corsair 620W PSU

EVGA GTX 260 (OC'ed to 650 mhz core from 576)

 

The screenshots tell the story. Take a look. If I adjust the FSB down a bit I can get the RAM to run at 1140, but it doesn't seem to like it when I change the timing away from 5-5-5-15. 6-6-6-18, for example, won't allow the computer to boot... What I want to do is get my RAM to a more decent speed, so any suggestions would be more than welcome.