Well, as I have mention before, RE was probably made mainly for benching with a dual core and some 1x1 ram and therefore itÂ´s very difficult to run 2Gb sticks @ 1600 or higher and itÂ´s almost impossible to run 2Gb sticks @ 1800 or higher on the RE, maybe with a new bios from Asus it could happen but I think they have their focus on the newer chipset so I donÂ´t think we going to see a new bios from then in the near future.
Sorry but I donÂ´t think you never going to be able to run the RE with a quad @ bus 450 and 4x2 ram @ 1800 stable, maybe thereÂ´s is a small possibility if you learn the art of how to master the "DRAM Skews", IÂ´ve tried but itÂ´s was to difficult for me so IÂ´m not the guy who can teach you that.
I donÂ´t know how your bios setup looks like, post it and IÂ´ll take a look .
Hi and welcome to OCN and the Asus Rampage Extreme Overclocking Guide
As IÂ´ve mention before, the RE is tricky to get stable with 2Gb sticks @ 1600 or higher.
I looked at your bios setup and hereÂ´s a suggestion
CPU clock skew: Delay 100ps
NB clock skew: Normal
DRAM Static Read Control: Disabled
DRAM Dynamic Write Control: Disabled
Ai Clock Twister: Lighter
Ai Transaction Booster: Manual
Common Performance level: 8 - 10, start with 10
FSB Termination Voltage: 1.25 - 1.30
CPU GTLVref(0): Auto
CPU GTLVref(1): -30 - -40
CPU GTLVref(2): Auto
CPU GTLVref(3): -30 - -40
NB GTLVref: +60 - +80
North Bridge Voltage: 1.45 - 1,50
DRAM Voltage: What you need for your ram @ 1600