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Overclocking i7-2600k on an ASUS p8z68-V GEN3 mobo, need advice

post #1 of 4
Thread Starter 
So I am overclocking for a 24/7 profile, using the below settings (BCLK 100, multiplier 46)

Fan is Noctua NH U12p SE2, without PWM though, running on 900rpm using U.L.N.A adapter.

Try all of these settings exactly as you see them:

Ai Tweaker > Ai Overclock Tuner: Manual
Ai Tweaker > BCLK/PCIE Frequency: 100.0
Ai Tweaker > Turbo Ratio: By All Cores
Ai Tweaker > By All Cores (Can Adjust in OS): 46
Ai Tweaker > Internal PLL Overvoltage: Enabled
Ai Tweaker > Memory Frequency: DDR3-1600
Ai Tweaker > iGPU Max. Frequency: Auto
Ai Tweaker > EPU Power Saving Mode: Disabled
Ai Tweaker > DRAM Timing Control: Manually set
Ai Tweaker\ CPU Power Management > CPU Ratio: Auto
Ai Tweaker\ CPU Power Management > Enhanced Intel SpeedStep Technology: Enabled
Ai Tweaker\ CPU Power Management > Turbo Mode: Enabled
Ai Tweaker\ CPU Power Management > everything else on Auto
Ai Tweaker > Load-Line Calibration: Ultra High
Ai Tweaker > VRM Frequency: Auto
Ai Tweaker > VRM Spread Spectrum: Disabled
Ai Tweaker > Phase Control: Extreme
Ai Tweaker > Duty Control: Extreme
Ai Tweaker > CPU Current Capability: 100%
Ai Tweaker > iGPU Load-Line Calibration: Auto
Ai Tweaker > iGPU Current Capability: 100%
Ai Tweaker > CPU Voltage: Offset Mode (this enables the voltage to adjust dynamically based on load which is a very good thing)
Ai Tweaker > Offset Mode Sign: +
Ai Tweaker > CPU Offset Voltage: 0.005
Ai Tweaker > iGPU Offset Mode Sign: +
Ai Tweaker > iGPU Offset Voltage: Auto
Ai Tweaker > DRAM Voltage: 1.50V
Ai Tweaker > VCCIO Voltage: Auto
Ai Tweaker > CPU PLL Voltage: Auto
Ai Tweaker > PCH Voltage: Auto
Ai Tweaker > DRAM DATA REF Voltage on CHA: Auto
Ai Tweaker > DRAM CTRL REF Voltage on CHA: Auto
Ai Tweaker > DRAM DATA REF Voltage on CHB: Auto
Ai Tweaker > DRAM CTRL REF Voltage on CHB: Auto
Ai Tweaker > CPU Spread Spectrum: Disabled (the Z68 chipset boards result in a BCLK of 99 MHz in CPU-Z with CPU Spread Spectrum enabled)


Advanced\ CPU Configuration > CPU Ratio: Auto
Advanced\ CPU Configuration > Intel Adaptive Thermal Monitor: Enabled
Advanced\ CPU Configuration > Hyper-threading: Disabled, unless you're 100% certain that you need it. Disabling it helps allow for a higher overclock, it reduces temperatures, and it results in the CPU needing a lower core voltage
Advanced\ CPU Configuration > Active Processor Cores: All
Advanced\ CPU Configuration > Limit CPUID Maximum: Disabled
Advanced\ CPU Configuration > Execute Disable Bit: Enabled
Advanced\ CPU Configuration > Intel Virtualization Technology: Disabled
Advanced\ CPU Configuration > Enhanced Intel SpeedStep Technology: Enabled
Advanced\ CPU Configuration > Turbo Mode: Enabled
Advanced\ CPU Configuration > CPU C1E: Enabled
Advanced\ CPU Configuration > CPU C3 Report: Disabled
Advanced\ CPU Configuration > CPU C6 Report: Disabled


I am stable and around 65-70 degrees on max load for a while using Prime95. However, voltage is 1.4. Should I try to lower the offset to get voltage down a bit, or can I get it down (and still stable) any other way? Or just leave it as it is?


Also, I am trying to disable hyperthreading in BIOS (BIOS v.0301), to no avail. The option is there, and enabled, but greyed out. Any suggestions?

I tried upgrading BIOS to the latest version on ASUS' website to see if anything would change, put it on a FAT32 formatted USB, inserted it before boot and went to E.Z. Flash 2. Found the .ROM-file, but the BIOS freezes when I press OK (when it asks me if I want to proceed with the upgrade). Tried several times.

Any input would be much appreciated, even though I know it's an old mobo and most probably have upgraded by now.
post #2 of 4
Ai Tweaker > VRM Frequency: Auto (If this is like the KHz option where you can adjust between 300KHz - 450 KHz, I set that to the maximum for overclocking stability.
Ai Tweaker > CPU Current Capability: 100% (Set this higher, you should be able to do like 115% or something like that).

For the CPU Voltage going to 1.4V. You may need to lower your Load Line Calibration so that it goes closer to a desired voltage. You should take note of your VID if you recorded it from the start (I think this is found with C-States off, EIST off, CPU Voltage on auto and taking note of the CPU voltage on load on stock CPU clock speed.

The voltage offset for CPU as you may already know adds an offset to the VID (The CPU voltage requested by the CPU which the motherboard gives it accordingly depending on motherboard settings).
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Gaming Computer
(19 items)
 
   
CPUMotherboardGraphicsRAM
Intel Core 2 Quad Q6600 Asustek P5Q-PRO Nvidia 9800 GTX+ Kingston DDR2 8gb 
Hard DriveOptical DriveCoolingOS
Western Digital 1 TB Pioneer Noctua NH-U9B Windows 7 Ultimate 64-bit 
MonitorKeyboardPowerCase
Dell Monitor Logitech G110 Antec 750W Thermaltake Aluminium Old Case 
MouseMouse PadAudio
Logitech G500 Gaming Mouse Generic Mousepad Soundblaster 5.1 VX 
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post #3 of 4
Thread Starter 
Quote:
Originally Posted by benjamen50 View Post

Ai Tweaker > VRM Frequency: Auto (If this is like the KHz option where you can adjust between 300KHz - 450 KHz, I set that to the maximum for overclocking stability.
Ai Tweaker > CPU Current Capability: 100% (Set this higher, you should be able to do like 115% or something like that).

For the CPU Voltage going to 1.4V. You may need to lower your Load Line Calibration so that it goes closer to a desired voltage. You should take note of your VID if you recorded it from the start (I think this is found with C-States off, EIST off, CPU Voltage on auto and taking note of the CPU voltage on load on stock CPU clock speed.

The voltage offset for CPU as you may already know adds an offset to the VID (The CPU voltage requested by the CPU which the motherboard gives it accordingly depending on motherboard settings).


Thanks for the reply.

Load voltage @stock speeds were already pretty high, over 1.3.

I am considering lowering LLC, or lowering the offset, to see if I can get stability at a lower voltage. What I am wondering is if it is really necessary? Let's say I get the voltage down to 1.328 after a lot of fiddling, is that really worth it? What would be the downsides of staying at 1.4 (which according to some is not EXTREMELY high) like I have it now, if it is working fine and is stable?
post #4 of 4
The only real downside of CPU voltage being at like 1.4V or higher is degradation, where the CPU will basically die out more quicker than usual. But by the time that even happens you'll almost certainly upgrade your computer to a better CPU.

Plus higher CPU temperatures and more power being used.
Gaming Computer
(19 items)
 
   
CPUMotherboardGraphicsRAM
Intel Core 2 Quad Q6600 Asustek P5Q-PRO Nvidia 9800 GTX+ Kingston DDR2 8gb 
Hard DriveOptical DriveCoolingOS
Western Digital 1 TB Pioneer Noctua NH-U9B Windows 7 Ultimate 64-bit 
MonitorKeyboardPowerCase
Dell Monitor Logitech G110 Antec 750W Thermaltake Aluminium Old Case 
MouseMouse PadAudio
Logitech G500 Gaming Mouse Generic Mousepad Soundblaster 5.1 VX 
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Gaming Computer
(19 items)
 
   
CPUMotherboardGraphicsRAM
Intel Core 2 Quad Q6600 Asustek P5Q-PRO Nvidia 9800 GTX+ Kingston DDR2 8gb 
Hard DriveOptical DriveCoolingOS
Western Digital 1 TB Pioneer Noctua NH-U9B Windows 7 Ultimate 64-bit 
MonitorKeyboardPowerCase
Dell Monitor Logitech G110 Antec 750W Thermaltake Aluminium Old Case 
MouseMouse PadAudio
Logitech G500 Gaming Mouse Generic Mousepad Soundblaster 5.1 VX 
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