X48 Rampage Formula Preview.

[Zucker2k]

Hi can you please list some Bios settings? That's an awesome overclock you got there. Hopefully I will get a bonus and afford that cpu as well.

Here is my easy Quad 500FSB with 8GBs of RAM:

Extreme Tweaker
Ai Overclock Tuner : [Manual]
CPU Ratio Setting : [9]
FSB Strap to North Bridge : [AUTO] : [400]
FSB Frequency : [500]
PCI-E Frequency: [100]
DRAM Frequency: [DDR2-1000]
DRAM Command Rate : [2N]
Dram CLK Skew on Channel A : [AUtO] : [300]
Dram CLK Skew on Channel B : [AUTO] : [300]
DRAM Timing Control: Manual
CAS# Latency :
RAS# to CAS# Delay :
RAS# Precharge :
RAS# ActivateTime :
RAS# to RAS# Delay :
Row Refresh Cycle Time :
Write Recovery Time :
Read to Precharge Time :

Read to Write Delay (S/D) :
Write to Read Delay (S) :
Write to Read Delay (D) :
Read to Read Delay (S) :
Read to Read Delay (D) :
Write to Write Delay (S) :
Write to Write Delay (D) :
DRAM Static Read Control : [Enabled]
Ai Clock Twister : [Stronger] : [Moderate]
Ai Transaction Booster : [Manual]
Common Performance Level : [09] you may be able to run PL8 stable with 4-4.25Ghz clocks. I find that with 4.5Ghz, I was only stable in windows by jacking up NB to 1.75v or moving from PL8 to PL9.

All Pull-ins = [Disabled] You can tweak these later if you want.

CPU Voltage : [Whatever your chip needs to be stable]
CPU PLL Voltage : [1.60v] set in bios, 1.66v real (for my board and chip)
North Bridge Voltage : [1.65v] with 8GBs of DDR2 @ 1000mhz 1:1
DRAM Voltage : [Whatever your chip needs to be stable]
FSB Termination Voltage : [1.56v] 1.48v real for 4.5Gh, 9x500fsb.
South Bridge Voltage : [1.100v]
SB 1.5v Voltage : [1.60v]
Loadline Calibration : [Disabled] A preference thing for me.
CPU GTL Reference : [0.62x]Generally, 45nm quads like 0.63x and 65nm 0.67x; my chip likes 0.62x all the way from stock clocks to 4.754Ghz.
North Bridge GTL Reference : [0.67x]
DDR2 Channel A REF Voltage : [AUTO]
DDR2 Channel B REF Voltage : [AUTO]
DDR2 Controller REF Voltage : [AUTO]
NB LED Selection : [NB Volt]
SB LED Selection : [SB Volt]
CPU LED Selection : [CPU Volt]
Voltiminder LED : [Up to you]
CPU Spread Spectrum : Disabled
PCIE Spread Spectrum : Disabled
CPU Clock Skew : [Delay 100ps] Thanks Mikeyakame
NB Clock Skew : [Normal] Thanks Mikeyakame

Advanced -> CPU Configuration

CPU Ratio Setting : [09]
C1E Suppport : Disabled
CPU TM Function : Disabled
Vanderpool Technology : Disabled
Execute Disable Bit : Disabled
Max CPUID Value Limit : Disabled

Have fun tweaking.

[SirDaemon]

I use my E8600 @ 4,4ghz - 8x550 with RAM 1:1, and it is stable.

Some weeks ago I tried to reach 575FSB 1:1 (that would be my RAM default) but i couldn't keep it stable, even with voltages raised a few steps.

Which skew do you think would help to stable it? CPU or NB?