Here are my settings for getting the CPU stable at 400x9:
Code:
Processor: Q6600
Ai Overclock Tuner: Manual
OC From CPU Level Up: Auto
Ratio CMOS Setting: 9
FSB Frequency: 400
CPU Clock Skew: Auto
NB Clock Skew: Auto
FSB Strap to North Bridge: 266
DRAM Frequency: DDR2-1200MHz
DRAM CLK Skew on Channel A1: Auto
DRAM CLK Skew on Channel A2: Auto
DRAM CLK Skew on Channel B1: Auto
DRAM CLK Skew on Channel B2: Auto
DRAM Timing Control: Manual
CAS# Latency: 5 DRAM Clocks
DRAM RAS# to CAS# Delay: 5 DRAM Clocks
DRAM RAS# Precharge: 5 DRAM Clocks
DRAM RAS# Activate to Precharge: 15 DRAM Clocks
RAS# to RAS# Delay: 3
Row Refresh Recycle Time: 50 DRAM Clocks
Write Recovery Time: 5
Read to Precharge Time: 3
Read to Write Delay (S/D): 8
Write to Read Delay (S): 3
Write to Read Delay (D): 5
Read to Read Delay (S): 4
Read to Read Delay (D): 6
Write to Write Delay (S): 4
Write to Write Delay (D): 6
Write to PRE Delay: 11
Read to PRE Delay: 5
PRE to PRE Delay: 1
All PRE to ACT Delay: 5
All PRE to REF Delay: 5
DRAM Static Read Control: Disabled
DRAM Read Training: Disabled
MEM. OC Charger: Disabled
Ai Clock Twister: Normal
Ai Transaction Booster: Manual
Common Performance Level: 6
Pull-in of CHA PH1: Disabled
Pull-in of CHA PH2: Disabled
Pull-in of CHB PH1: Disabled
Pull-in of CHB PH2: Disabled
PCIE Frequency: 100
CPU Voltage: 1.4375
CPU PLL Voltage: 1.553
FSB Termination Voltage: 1.312
DRAM Voltage: 2.15775
North Bridge Voltage: 1.40475
South Bridge 1.5 Voltage: 1.5265
South Bridge 1.1 Voltage: 1.15300
CPU GTL Reference (0): +50
CPU GTL Reference (1): +10
CPU GTL Reference (2): +50
CPU GTL Reference (3): +10
NB GTL Reference: Auto
DDR2 ChA Reference Voltage: Auto
DDR2 ChB Reference Voltage: Auto
North Bridge DDR Reference: Auto
CPU Configuration:
Ratio CMOS Setting: 9
C1E Support: Disabled
Max CPUID Value Limit: Disabled
Intel Virtualization Tech: Disabled
CPU TM Function: Disabled
Execute Disable Bit: Disabled
Load-Line Calibration: Enabled
CPU Spread Spectrum: Disabled
PCIE Spread Spectrum: Disabled
I found that adjusting the GTLs to +50,+10 gave me 9 hours small fft stability (which I stopped), whilst anything lower or higher conked out after 8 minutes or less. This was also tested twice on each setting, so I'm now much more confident this is the correct one for me.
I've now pushed up to 405x9 which is pushing my memory a little more, but I know it's stable up to 1233 so hopefully I can begin to encroach on my old 410x9 on 1.4625v setting I had on the P5B.. At least I'm close, with faster memory speeds :)
So far 405x9 failed on the 4th core (which I know is weakest) with the same vcore, so am currently testing with 1.45v which has improved so far.
410x9 is still crapping out on me even at 1.5v so I would ask for any suggestions on how to approach this speed.