GA-P67AUD3P-B3 Cpu Vcore issue

teejay73

teejay73

teejay73

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Hi guys,
just a little query, how do I set my v-core on this mobo manually, basically in the bios there is two columns when setting the v-core, one is listed @ 1.35v as standard and the other is listed @ 1.25v current (this is the one I set).Now when I run say prime95 blend test, the volts in Core temp go up to 1.35v, how do I change this to only use the v-core I set??

I checked Cpuz but I think the V-core is borked in the version I have as it dont move from 1.06v, even when I use Prime. Also I note that I can only change the LLC level to auto or normal, when others are using numbered levels, why is this?

Any help on this would be much appreciated. ;)
 
First up. Download the latest version of CPU-z, the latest version does read the correct voltage for the P67 B3 boards. The old one simply read the vtt voltage.

Now to your question. The two columns are informative. The one is what the current saved setting is, and the other is what you have set it to and will be saved by you. Only one of the columns can be set.

Here is what you do.

Arrow keys to navigate the highlighed bar over the Vcore.
Press enter
Type in the number you wish your Vcore to be. Remember to use decimals. So it will be something like 1.285 or 1.340

Alternatively you can use the page up (+) or the page down (-) to increase of decrease any of the values in your bios. All you need to do is make sure the setting you wish to change is highlighted.

Once you have typed in your new value then you need to save the new settings. The easy way is to press F10 and then select yes and enter. Done.

Now LLC - different motherboards have different LLC options. The P67 are less complicated that the Z68 Gigabyte boards. I do not know which BIOS version you are using so can not really comment. But most of the P67 BIOS have the two additional options. Level 1 or level 2. Not sure why you can not see them, could just be your version motherboard specific.
 
Cheers for the reply,
I took a screenshot to show what I am seeing, even though I downloaded the latest Cpu-z, I still get the same V-core reading!? In the screenie I am running prime95 blend and Coretemp still shows 1.35v, when in bios I set it to 1.25v. It seems the 1.35v is the normal setting in Bios and the 1.25v is the current setting that I set, so based on this I cant change the 1.35v setting as there is no option for this.I cant help thinking that I must be doing something wrong, I wonder if it has anything to do with the GB Easytune software? :confused:

Capture2.png
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As regards to the LLC, the only options are Auto,Normal & Disabled. I am using the latest F4 bios.
 
Un-install ET6 please.
We will do all of your overclocking in the bios for now.

ET6 is fine for certain things, but there is an option that loads your saved settings at each Windows boot. I think that is happening now.


  1. Post into BIOS
  2. Select fail safe defaults
  3. F10 and enter to save and reboot.
  4. Back into BIOS - now the whole system will be at default for sure.
  5. Set your ram at the settings you wish to use. Profile 1 is handy if your ram has an XMP profile.
  6. Set Multi 40x
  7. Leave all else on auto please.
  8. Save settings and exit. F10 and enter
  9. Open latest version of CPU-z
  10. Run Super Pi or some such thing.
  11. Take a screen during the run of Super Pi
  12. Post a link to the screen here. Bigger is better - that is why I am asking for a link and not a embedded image


Once we have a base line to work from we will then move forward.
 
I am assuming you were at 40x - I think you did not read step 11 as I intended :) I wanted you to take a screenshot during the Super Pi run. Not at the end of it. Basically I wanted to see if your vCore was being correctly picked up, and if so if there was any vDroop.

But moving on.

  1. Reset and go into the BIOS
  2. Advanced CPU
  3. Disable all CPU management stuff, just keep all your cores active.
  4. Now we go back to the main overclocking page and up the multi to 45
  5. All the voltages still on auto
  6. F10 and enter and boot into OS
  7. Open CPU-z and run Super Pi
  8. Take a screen during the running of the super pi
  9. If all good then reboot and change multi to 46
  10. Repeat untill your system does not boot into OS or,
  11. your temperature are above acceptable levels 70'C + during load.
  12. Post back here and we will start the final part of the process which is fine tuning.
 
1Day said:
I am assuming you were at 40x - I think you did not read step 11 as I intended :) I wanted you to take a screenshot during the Super Pi run. Not at the end of it. Basically I wanted to see if your vCore was being correctly picked up, and if so if there was any vDroop.

But moving on.

  1. Reset and go into the BIOS
  2. Advanced CPU
  3. Disable all CPU management stuff, just keep all your cores active.
  4. Now we go back to the main overclocking page and up the multi to 45
  5. All the voltages still on auto
  6. F10 and enter and boot into OS
  7. Open CPU-z and run Super Pi
  8. Take a screen during the running of the super pi
  9. If all good then reboot and change multi to 46
  10. Repeat untill your system does not boot into OS or,
  11. your temperature are above acceptable levels 70'C + during load.
  12. Post back here and we will start the final part of the process which is fine tuning.
Click to expand...

Ooops sorry about step 11! Right, set multi to 45, kept everything on auto for voltages tried to boot to OS and BSOD straight away "IRQL_NOT_LESS_OR_EQUAL", re-booted and now into windows, should I continue??
 
Right that is excelent. Could you tell me what are your temps? Please use the latest coretemp.

Once we know your temps are quite manageable, we will either try for more, but personally for a 24/7 system I think 4.5 is the perfect balance between voltage and heat for the performance.

http://www.softpedia.com/get/System/System-Info/Hyper-PI.shtml will allow you to run 4 itterations of the benchmark at the same time. This is a very handy tool to get a rough idea of your temps at max load. Without the danger of damaging your CPU with some of the so called stress tests.

Once that has been done please post your temps. And then we will move forward to the fine tuning part of things.
 
Current temps in Coretemp are idle @ 40c-44c over the 4 cores. Should I not be concerned with the BSOD? I also ran a quick Prime95 and it failed with-in seconds on 3 out of the 4 cores.

Will I try the benchmark you suggested?
 
I certainly expect it the system to fail within seconds. It is not tuned at all. I just want to see the temps under load. Prime95 is an unnatural load on your system. All that running prime proves is it can run Prime. Real world is where it counts. But we are getting ahead of ourself.

Once you have an idea of the temps then go into the BIOS and write down all the voltages that are recorded there. You know which is the actual voltage set now. They shold be the only numbers on the page. What that will tell us is what the motherboard used to get you into OS. Nothing more. We will proceed once that is done.
 
Cheers 1Day, the temps taken during the hyper P1 bench were as follows:

Core0=59c
Core1=61c
Core2=59c
Core3=61c
All@ 100% load. The Voltages recorded in Bios were,
V-Core=1.355v
dvid=0.0v
qpi=1.05v
sys agent volt=0.920
ph core=1.05
cpu pll=1.8v

D-ram=1.5v (although xmp voltage shows 1.65v on M.I.T front page at bottom of screen)
All voltages set to auto.
 
Sorry for the delay in getting back to you. Kids and other kind of domestic duties. :D

Your temps are acceptable but I would leave the multi at 45x as it is not really worth the extra heat and all that goes with that for a few frames per second extra.

Now what you do is set LLC at enabled.
You can hard set the above voltages into the bios.
Just humour me and set XMP 1 profile please.
Set your multi again as it will revert when you set the XMP profile.
Boot into OS and run 4 lots of Hyper Pi 32mil.
You should pass.
Now try Prime95 again.

Will check back later.
 
No need to apologise, after all you are the one helping me!

Left it at 45x as I am more than happy @ 4.5ghz! Enabled LLC and hard set the voltages, I had already set XMP 1 profile so no change there and have completed Hyper Pi 32m in a time of 8mins +, temps were 2c up on my previous run.

I am now 20 mins into Prime95 and low and behold all is well, temps are 70c on 1 core and 1c under 70c on the other cores(max temps). Got to say 1Day, you def know your stuff and I am well impressed with my results thus far, so thank-you very much!!!!

Not done a lot in the way of overclocking before and I am glad you rescued me before I done something I might have regretted!!

Why is it though that so many people swear by Prime95 & IBT for a stable rig, if your system wont ever get that stressed?? I think you have proved here that they are not really needed.

Anyway, thankyou ,thankyou you are a diamond for holding my hand through this!! Is there anything else that I need to do? Can I for example decrease my Vcore or is this the sweet spot?
 
Once you have a solid base to work from. Then write down all those settings, and, or save them in the bios profile option.

  1. BIOS main window
  2. F11
  3. Select slot - you have quite a number so it makes no difference which you select
  4. Type a name of your saved profile. 45xBaseline for example
  5. Enter and follow the prompt
  6. You can then additionally save your profile to USB stick
  7. Same proces as above just scroll down to the HDD option
  8. Tab to navigate
  9. Type name and enter
  10. Escape to return to BIOS

Now you have a fail safe place to return to if things get messed up. Just remember if you update your BIOS all your saved profiles will be wiped out. That is the reason I suggest you write it down at well.

You can start by dropping your PLL to 1.76, that is the setting I use.
Then in single increments down drop your Vcore.
How you test the stability of your system is up to you. I would suggest drop the vCore and simply use your machine like you normally would. If you have a problem BSOD then up the vCore one increment and repeat as needed.

Your question about peoples fascination with these stability tests. Well it is all up the individual to decide what stability means for them. The problem with many of the stability tests available is that they stress the system in an unnatural way. There are no applications, or games we use that stress a system 100% - both ram and CPU. Hyper Pi is a benign stress test. So I know of far to many people who have passed these stress tests and then BSOD when playing their favourite game. Your system is stable if it does the things you want it to do and does not fall over when you want to do it. The stress test Prime95 for example was originally designed for other purposes and because of the load it puts on the system a derived purpose was evolved. Just enjoy your system. If it does what you want then all is good. If you like to run stress tests for days on end then all good and more power to you. At the end of the day we all have different needs and expectations. No right way or wrong way as long as you get to the outcome you want.;)
 
All going well with my O/C, I have been going by what you said and just dropping the v-core by 1 increment at a time, changed the cpu pll to 1.76 as per your suggestion and I am currently sitting at 1.34v on the v-core and all seems stable. I have been using hyper pi 32m and short runs of prime95 to check temps. You are now my official Ocuk Guru! :D

Coincidentally, I read your thread on your overclocked 2600k and was left quite astonished at how you got such a high clock, until I saw your pic of your LN2 canister! I must say that is quite some hobbie you have there!:eek:

Once again thankyou very much for your help:).
 
Not a problem. Just to put the record straight I did that overclock for the first time on water. I have never benched my SandyBridge CPU on LN2. Mainly because it does not make any difference to the overclock. I subsequently benched with the CPU on a Single Stage unit to protect my CPU and prolong its life. Your max overclock (SandyBridge) is not determined by cold. In other words the CPU does not scale with cold like other chipsets have in the past. It is unique as a CPU. :p
 
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