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Ivy Bridge Overclocking Guide ► Asus Motherboards - Page 29

post #281 of 7032
Quote:
Originally Posted by Systemlord View Post

Alright I'm really confused, I though we were going to use vcore of 1.24v-1.25v as an example and now we are at 1.104v, I feel like we were starting with the basics and now things have flown right over my head. Why in the world would we set a negative Offset? We haven't covered negative Offset yet. I feel like we went from the basics page one to advanced page ten to quickly, to far to fast for me. Baby steps please.
I appreciate all of your help.

Sorry, didn't mean to confuse you more.

The reason I chose the lower 1.104v in the example above is because that is the stock voltage at which most chips run under stock clocks. It is just to demonstrate the basis of how vid and offset work to affect the final vcore we will reach. While 1.24 to 1.25v is a fair assumption at 4.5GHz the voltage tend to differ significantly more between processors as the clock speed is pushed up.

Now let's take a step ahead to where we want to end up when we OC.
Let's say we decide to start at a voltage of 1.24 for our vcore. You will set this voltage manually (the BIOS contains an option for vcore voltage, Manual or Offset)
Now, when we boot up our vcore will be 1.24v across all of our CPUs operating frequencies (So from 1.6GHz at the low end up to 4.5GHz at the high end), let's say we now run Prime95 and we get an error, we will restart and push our voltage up a notch, so we end up at 1.245v. We will repeat our Prime95 runs, pushing vcore up a notch after each failure or until our CPU is stable.
Let's say we reach a stable point at 1.25v for our vcore with a vid (as read by Core Temp) of 1.1909v

Now, we want to convert our setting from manual to offset so we will take:
1.25 (our stable vcore) - 1.1909 (our vid at our desired frequency) and this gives us a difference of 0.0591. We will take this as an offset of +0.06 as we cannot set an offset that exactly match our difference.
After this, when our PC runs again the VID will be 1.1909 under load plus our offset of 0.06 which will give us a vcore of 1.25v

I hope this makes more sense. thumb.gif Shout if you need me to explain more
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post #282 of 7032
Quote:
Originally Posted by DeadlyEmbrace View Post

Sorry, didn't mean to confuse you more.
The reason I chose the lower 1.104v in the example above is because that is the stock voltage at which most chips run under stock clocks. It is just to demonstrate the basis of how vid and offset work to affect the final vcore we will reach. While 1.24 to 1.25v is a fair assumption at 4.5GHz the voltage tend to differ significantly more between processors as the clock speed is pushed up.
Now let's take a step ahead to where we want to end up when we OC.
Let's say we decide to start at a voltage of 1.24 for our vcore. You will set this voltage manually (the BIOS contains an option for vcore voltage, Manual or Offset)
Now, when we boot up our vcore will be 1.24v across all of our CPUs operating frequencies (So from 1.6GHz at the low end up to 4.5GHz at the high end), let's say we now run Prime95 and we get an error, we will restart and push our voltage up a notch, so we end up at 1.245v. We will repeat our Prime95 runs, pushing vcore up a notch after each failure or until our CPU is stable.
Let's say we reach a stable point at 1.25v for our vcore with a vid (as read by Core Temp) of 1.1909v
Now, we want to convert our setting from manual to offset so we will take:
1.25 (our stable vcore) - 1.1909 (our vid at our desired frequency) and this gives us a difference of 0.0591. We will take this as an offset of +0.06 as we cannot set an offset that exactly match our difference.
After this, when our PC runs again the VID will be 1.1909 under load plus our offset of 0.06 which will give us a vcore of 1.25v
I hope this makes more sense. thumb.gif Shout if you need me to explain more

Edited by Agoniizing - 9/19/12 at 3:33pm
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post #283 of 7032
Quote:
Originally Posted by Agoniizing View Post

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post #284 of 7032
Quote:
Originally Posted by DeadlyEmbrace View Post

Ok, it's possible that your CPU simply needs a little bit more juice, try bumping up the voltage a notch and see if it stabilizes.
I put my Vcore to 1.6 and 1.7, so it cant be that there's not enough juice and i'm still getting this error on prime95 in 20mins "FATAL ERROR: Rounding was 0.5, expected less than 0.4 Hardware failure detected, consult stress.txt file"
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post #285 of 7032
Quote:
Originally Posted by Agoniizing View Post

I put my Vcore to 1.6 and 1.7, so it cant be that there's not enough juice and i'm still getting this error on prime95 in 20mins "FATAL ERROR: Rounding was 0.5, expected less than 0.4 Hardware failure detected, consult stress.txt file"

weirdsmiley.gif

Don't do that again if only cooled by air or water. Once was 1 time too many, too much voltage can be worse than not enough.
What memory kit are you using?

edit: Also, what cpu cooler?
Edited by FtW 420 - 9/19/12 at 5:06pm
    
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post #286 of 7032
Quote:
Originally Posted by FtW 420 View Post

weirdsmiley.gif
Don't do that again if only cooled by air or water. Once was 1 time too many, too much voltage can be worse than not enough.
What memory kit are you using?
edit: Also, what cpu cooler?
Whoops, that was a typo lol. I meant 1.27 and 1.28. Im using 2x4gb ddr3 corsair vengeance 1600 and a hyper 212 evo cooler
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post #287 of 7032
Quote:
Originally Posted by Agoniizing View Post

Whoops, that was a typo lol. I meant 1.27 and 1.28. Im using 2x4gb ddr3 corsair vengeance 1600 and a hyper 212 evo cooler

Man, I bet you had everyone on this thread worried about your chip frying! LOL biggrin.gif
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post #288 of 7032
Quote:
Originally Posted by PCWargamer View Post

Man, I bet you had everyone on this thread worried about your chip frying! LOL biggrin.gif
I just wish someone would help me get a stable overclock.
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post #289 of 7032
Did you run prime at stock?
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post #290 of 7032
Thread Starter 
Oh god, when I went into my profile page, I saw all those notifications for this thread. I'm really sorry for this late reply. Thanks to all the guys who are helping already. tongue.gif

1: Make sure Internal PLL Overvoltage is enabled.

2. Set PLL Voltage to 1.8000

3. Set DRAM to 1333 9-9-9-24 2T (Will put back to normal later, don't worry)

4. Set vcore to 1.25 (using manual!) NOT OFFSET!

5. Set everything else to how it is in the guide

Attempt to run prime95 for 1 hour. After 1 hour, post back here but don't stop the test.
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