ASUS P5B-Deluxe; Problems & Fixes

[chuckbam]

my rig:
E6700 L632A B2
P5B Deluxe 1.10 C2 on 1004 BIOS
2GB Kingston HyperX PC2 9600 DDR2 1.2Ghz ram

...I seem to have hit a wall at 400 fsb

The highest I could reach was 400 fsb 1:1

If I try to set the ram at 600 (1.2Ghz) the highest fsb I can set is 300.

I'm stumped, ram timings are relaxed at 5-5-5-15, all voltages are maxed out while trying different high CPU voltages from 1.475v to 1.6v

Unnecessary CPU and RAM settings are disabled (C1E, TM, Spread Spectrum, Static read). I added extra cooling, 120mm case fan and thermalright heatsinks for the NB, SB and MOSFETs

Also a few differences with my old P5w:
The temps! The E6700 now idles at 40C on watercooling
Also, the system's performance is lower than the P5W at the same settings or at the higher 400fsb 1:1 (which I couldn't reach with the P5W).

Anything I should know about the P5B and high fsb settings?

Jast as a test.
Mem Voltage at 2.3 v
CPU at 1.3857
Lock PCI at 33.33%
Set all the other setting on that page as default
Set Mem at 4-5-5-12 The rest keep all other settings at defult.

With those settings I can get my 4 GBs Kingston HyperX up to 1,000 MHz (500 x2 Mhz)
and A fsb of over 1500 MHz