Overclocking Asus P8Z68-V Pro help

[Nazgrul]

I've just put together a computer with this motherboard paired up with a corsair force gt 120gb. I tried overclocking it through the bios, but when I get to the desktop and run cpu-z it tells me I'm still at stock (3.3), but when I go back to the bios it still shows my overclocked settings. Also, when I start up the computer it looks like it loads the bios twice? At first it loaded it up 3 times, but after I disabled the marvell drive in the bios it stopped showing me the hard drive not detected for that, is this related to why my overclocking isn't working?

 

[Binky]

This board is amazingly easy to OC, assuming that you have a 2500k or 2600k.

Turn multiplier up to to 40
Turn off PLL overvoltage to avoid sleep issues

You're done. Read some OC guides to push it further but the Asus "auto" setting seem to work pretty well for mild overclocks.

 

[Nazgrul]

I heard it was easy and I've looked at all the reviews and guides and stuff, but for some reason my overclocking isn't sticking. When I manually change it in the bios and it gets to the desktop, cpu-z tells me I'm still at 3.3ghz. I tried using ai suite 2 to overclock it as well and when it restarts and gets back to the desktop it tells me the overclock was successful, but I check cpu-z and I'm still at stock... Everytime I go back to the bios advanced mode it still shows my overclocked settings while the EZ mode shows stock settings... Not sure what to do.

Btw am I supposed to enable TPU and disable EPU. My manual says pushing the TPU down disables it, but when I push it down the light goes on (to show it is enabled), so I kept it down and EPU up (no light)

 

[Kenmitch]

The EZ mode won't show your overclock.

Did you try loading your cores with something like intel burn test or prime and use CPU-Z to see if your overclick kicks in?

I have the asus board in my sig. Running at 4.6ghz didn't have to mess with the tpu or epu on my board.

I think turning off the internal pll voltage gets rid of the double boot also.

You still idle at desktop at 1.6ghz don't you?

 

[Binky]

Nazgrul...you do have a 2500k or 2600k, right? I'm assuming 2500k by your comment about 3.3ghz. The K part is important.

 

[Nazgrul]

yea I have the k, I was just being dumb and looking at the wrong thing. I used prime to stress and used the turbo evo extreme tool to overclock it since I'm not sure how to mess with the bios. It's running at 4.4 at 1.312v with a high temp of 73C. Is this good?

I'm running prime95 blend test for 24hr to make sure it's stable. Also, my comp seems to double boot when i start it up sometimes and freezes sometimes when I open some programs/do certain tasks. Not sure if this is normal or not. It seems a little slow in loading things that should be quick.

 

[BonzaiDuck]

yea I have the k, I was just being dumb and looking at the wrong thing. I used prime to stress and used the turbo evo extreme tool to overclock it since I'm not sure how to mess with the bios. It's running at 4.4 at 1.312v with a high temp of 73C. Is this good?

I'm running prime95 blend test for 24hr to make sure it's stable. Also, my comp seems to double boot when i start it up sometimes and freezes sometimes when I open some programs/do certain tasks. Not sure if this is normal or not. It seems a little slow in loading things that should be quick.

If you aren't already wasting the time for the 24hr test prematurely, assume you ran OC-tuner or the Windows AI-Suite to get that overclock -- then enter the BIOS and go to the Tweaker tab.

Run down to the VCORE setting -- which should be "Auto". The Offset for the VCORE would probably show a sign of "+" and "Auto." Make a note of the voltage shown at the left of "Auto" for VCORE. Leave the sign as is for Offset and change the "Auto" of Offset to maybe .055 or .06. Reboot, go immediately to BIOS, and observe whether the VCORE you made note of has changed to more or less, or if it remains the same. Repeat this until the fixed value for Offset gives you the VCORE you started with when Offset was "Auto."

If the Offset sign was "+," start adjusting down from the setting that gave you the original VCORE in increments of 0.01, each time saving and rebooting to Windows. Run the stress-test for 15 minutes to an hour. If stable, go back and drop the offset by another 0.010, boot back into windows, rerun the stress-test. Keep an eye on your prevailiing "current" VCORE in either HWMonitor or the ASUS "Sensor" monitor, versus the maximum.

This way, you should be able to cut back on the peak VCORE a tad, and if you have LLC enabled [mine I've left on "Medium" or 25%], you'll notice in HW Monitor that the peak voltage after stopping the stress test should drop as you cut back a tad on the Offset.

Then your high temp of 73C may be reduced by a couple C degrees.

If not sure how to work with BIOS as you say and after these tips, do some reading, go slowly.

Also -- should've put this up there in the beginning. There are some recommended voltages for VCCIO, CPU_PLL and so forth. you'll find them in over-clocking guides for either the P67 or Z68 chipset. If your RAM is rated at 1.5V instead of 1.65V, fix it at that value before you start tuning the VCORE offset. Set the timings to the RAM spec. Set the VCCIO and PLL voltage to what is recommended or a few millivolts higher, and watch what the BIOS shows you to the left of those settings.

With these latter voltages, you may also want to re-run your OC-tuner or other "automatic over-clock" -- because they will "honor" the settings you made. Once done -- you can begin adjusting the Offset voltage as I mentioned. This may reduce temperatures a bit, and you can proceed from there under the advisement that the temperature you've cited is already at the throttling point for the processor.

Also -- follow the board-maker's advice and leave EIST, C1E etc. enabled or "auto."