Overclocking my i5 2500k to 4.5Ghz

[mohammad_sanoussi]

So I just overclocked my cpu to 4.5ghz.
Here r my specs:
PSU: Corsair AX850
CPU: Intel core i5 2500k OC @ 4.5Ghz
CPU Cooler: Corsair A70
MOBO: ASUS P8P67 Pro Rev. 3.0
RAM: Kingston HyperX 8GB (4 x2GB) DDR3 -1600MHZ

-Here are the setting I tweaked in the bios (p8p67):
Ai Tweaker Tab
BCLK/PEG Freq: 100
Turbo Ratio: By All Cores (Can Adjust in OS)
By All Cores (Can Adjust in OS): 45
Internal PLL Overvoltage: Enabled
Memory Freq: DDR3-1600Mhz
EPU Power Saving Mode: Disabled
DRAM Timiing Control: Auto
CPU Power Management:
CPU Ratio: Auto
Enhance Intel Speedstep Tech: Enabled
Turbo Mode: Enabled
Turbo Mode Param: Auto

DIGI+ VRM
Load Line Calibration: Extreme
VRM Freq: Auto
Phase Control: Extreme
Duty Control: Extreme
CPU Current Capability: 100%

CPU Manual Voltage: 1.35V
DRAM Voltage: 1.65V
VCCSA Voltage: 1V
VCCIO Voltage: 1.1V
CPU PLL Voltage: 1.9V
PCH Voltage: Auto
CPU Spread Spectrum: Disabled

Advanced tab:
CPU Config
CPU Ratio: Auto
Intel Adaptive Thermal Monitor: Disabled
Limit CPUID Max: Disabled
Execute Disable Bit: Enabled
Intel Virtualization Tech: Disabled
CPU C1E: Disabled
CPU C3 Report: Disabled
CPU C6 Report: Disabled

Monitor Tab:
CPU Q-Fan Control: Disabled
Chassis Q-Fan Control: Disabled

What do u think of the voltages and settings that I used, r they stable?
Also, I'm running Prime95 for about an hour now with no errors and the temperatures are 67 72 75 68

now about 2hrs have passed with no errors and the temps are 70 75 76 70

Thanks in advance

 

[Master&Puppet]

Looks fine mate. Temps and volts are good.

To be honest there are only a couple of settings you need to be playing with to get the best out of your CPU (only necessary if you want to push towards or over 5GHz).

LLC set to a high setting (doesn't have to be the highest - that just adds heat).
Spread spectrum disabled.
Turn off the Turbo.
Set the cpu mulitplier to whatever clock you want (i.e. 45 for 4.5GHz)
If the PC fails to boot add a tiny bit to the Vcore until it does (set to manual).
Speedstep can also be turned off to help stability but I like to leave it on so that the CPU can throttle down when not under load.
Everything else set to default.

That's basically all you need for sandy.

 

[CPMFW]

voltage and temperature looks good
you should be fine...

 

[p1ngman1969]

nice job

 

[OcSurfer]

not bad temps on air either

 

[jamesriley94]

I didnt think LLC mattered if you were running it on manual voltage? I assumed that was only for offset mode?

It didnt affect my overclock whatsoever when i was going for manual, but i wanted the voltages a little lower as I dont often game or use any cpu intensive applications

 

[Master&Puppet]

I didnt think LLC mattered if you were running it on manual voltage? I assumed that was only for offset mode?

It didnt affect my overclock whatsoever when i was going for manual, but i wanted the voltages a little lower as I dont often game or use any cpu intensive applications

It should be effective for both settings. However people often overestimate the amount of LLC you need, especially for a 24/7. There is definitely no need to set it to the top/extreme level which record breaking 6+GHz clockers are aiming for. I have found that a mid range setting is plenty to counter Intel's Vdroop at around 5GHz.

Particularly with the IB chip which runs hot with volts it is in people's interest to keep volts (and any other settings which involve volts) as low as possible including LLC.

It's definitely worth playing around with the LLC when a clock becomes unstable before adding more volts imo.