Ok been on here lurking and trying to figure this thing out. My components consist of an E8400 stepping C0, P5Q Deluxe, and 2x2 Gig of Corsair Ram. I have been really struggling with this cpu for some time now, even with my old P35 Platinum P.O.S MSI board. The cpu is crap and very unstable @ anything ove 4 Ghz. Here are my current settings that are actually stable for quite some time now. Could use a little more help with the advanced settings such as NB GTL, FSB Termination Voltage, CPU GTL etc. I have tried some of the settings recommended here but as you will notice my voltages are quite a bit higher then most. I know I can lower them a bit if I can understand what these other settings actually do. thx

JumperFree Configuration Settings
AI Overclock tuner: Manual
CPU Ratio Setting: 7.5
FSB Strap to North Bridge: 400
FSB Frequency: 533
PCI-E Frequency: 100
DRAM Frequency: 1066

DRAM Timing Control: Manual

1st Information :

CAS# Latency: 5
DRAM RAS# to CAS# Delay: 5
DRAM RAS# Precharge: 5
DRAM RAS# Activate to Precharge: 15
RAS# to RAS# Delay : AUTO
Row Refresh Cycle Time: AUTO
Write Recovery Time: AUTO
Read to Precharge Time: AUTO

DRAM Static Read Control: Disabled
DRAM Read Training: Disabled
MEM. OC Charger: Enabled
AI Clock Twister: Strong
AI Transaction Booster: Manual
Strenght 11

CPU Voltage: 1.4500
CPU GTL Voltage Reference (0/2):AUTO
CPU GTL Voltage Reference (1/3):AUTO
CPU PLL Voltage: 1.74
FSB Termination Voltage: Auto
DRAM Voltage: 2.16
NB Voltage: 1.46
NB GTL Reference: Auto
SBridge Voltage: Auto
PCIE SATA Voltage: Auto

Load Line Calibration: Enabled
CPU Spread Spectrum: Disabled
PCIE Spread Spectrum: Disabled
CPU Clock Skew : AUTO
NB Clock Skew : AUTO
CPU Margin Enhancement : Optimized

Advance CPU Settings
CPU Ratio Setting: 7.5
C1E Suppport: disabled
Max CPUID Value Limit: Disabled
Intel® Virtualization Tech: Enabled
CPU TM Function: Disabled
Execute Disable Bit: Enabled
Intel SpeedStep Tech : disabled