"ASUS P5Q Deluxe discussion".

[Leeghoofd]

Thats not the problem, if it was id have the same issue at 3.6GHz (425*8.5) with the memory at 510(1020) but I don't.

Anyway, tried 1406, makes no difference, slightly annoyed as my old P35 did the same settings, this motherboard is no better for overclocking at all so far.

Try these mate :

JumperFree Configuration Settings
AI Overclock tuner: MANUAL
CPU Ratio Setting: 8.5
FSB Strap to North Bridge: AUTO
FSB Frequency: 450
PCI-E Frequency: 101
DRAM Frequency: 900
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

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: 55
Write Recovery Time: AUTO
Read to Precharge Time: AUTO

DRAM Static Read Control: DISABLED
DRAM Read Training: AUTO
MEM. OC Charger: AUTO
AI Clock Twister: AUTO
AI Transaction Booster: AUTO

CPU Voltage: 1.35
CPU GTL Voltage Reference (0/2): AUTO
CPU GTL Voltage Reference (1/3): AUTO
CPU PLL Voltage: 1.56
FSB Termination Voltage: 1.26
DRAM Voltage: 2.0
NB Voltage: 1.26
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
CME :  Compatible or Performance

Advance CPU Settings
CPU Ratio Setting: Manual
CPU VID: Default
C1E Suppport: Disabled
Max CPUID Value Limit: Disabled
Intel® Virtualization Tech: Disabled
Vanderpool Technology: Disabled
CPU TM Function: Disabled
Execute Disable Bit: Disabled 

And coming from a solid performing P35 platform P45 is not a real upgrade unless you are running crossfire or a dual core for high FSB action...