Asus P5K-Premium OC

[Sres]

Hey guys, I've had a go at overclocking my system, bios set as below, I've filled in what I can remember, I've used a combination of the guide + a post about the the deluxe version. My CPU is guaranteed to 3.3mhz.

Atm the core temps are ranging between 38-52 idle at windows to 67-75 while running prime95 blend test.

CPU-Z Validator 2.1

I'm going to leave it running over night to see what happens, any advice, or changes you think I should look into? Should I put the 2x smaller pipe fans on, will they make much difference to the overall temp?

Asus P5K Premium Wifi Bios Settings
Bios 0802
JumperFree Configuration Settings
CPU Clock : 400Mhz
Multiplier : x9
FSB Frequency : 400
PCI-E Frequency : Auto

DRAM Frequency: 533.9
Dram Command Rate
DRAM Timings:-
CAS# Latency:5
RAS# to CAS# Delay:5
RAS# Precharge:5
RAS# Activate to Precharge:18
TWR:
TRFC:
TWTR:
TRRD:
TRTP:
DRAM Static Read Control: Auto
Transaction Booster: Auto
Boost Level :
Clock Over-Charging Mode:
Level
CPU Spread Spectrum: Disabled
PCIE Spread Spectrum: Disabled
CPU Voltage: Auto
CPU Voltage Reference:
CPU Voltage Damper:
CPU PLL Voltage: 1.50
DRAM Voltage:
FSB Termination Voltage: 1.20
North Bridge Voltage: Auto
North Bridge Voltage Reference:
South Bridge Voltage: Auto
Advance CPU Settings
C1E Suppport: Disabled
Max CPUID Value Limit:
Vanderpool Technology: Disabled
CPU TM Function: Disabled
Execute Disable Bit: Disabled
Intel® Speedstep Tech: Disabled

[Clunk]

Try the CPU voltage at 1.35v to start with for that speed....and then up the FSB slowly, if it fails, you can add a touch of CPU voltage.

[Sres]

Hi Clunk, I tried the cpu volt at 1.3 and I got BSOD earlier, so put the volts back on auto to get it to reboot.

My idling temps are actually 48>58 not what I stated above, are these too high?

[Kelainefes]

Your temps are too high in my opinion, try setting the voltage manually to 1.4, see what temps you get and if the system is stable.
What is your CPU cooler?