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Can't get OC stable

post #1 of 7
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I'm trying to take my sig processor to 4.0 GHz (it says 4 GHz but that was from a seemingly stable OC). I have tried taking the multiplier to 18 and and by taking the base clock to 223, I have tried by taking the multiplier to 22.5 and by taking the base clock to 180 and still nothing. I then tried to let a program that came with my motherboard called Asus AI Suite II OC it and all it could get out was a 20 MHz increase in the base clock with the multiplier at 16. Am I doing something wrong?
Edited by kabj06 - 10/2/11 at 1:57pm
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Shnayvetchen
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post #2 of 7
Quote:
Originally Posted by kabj06 View Post
I'm trying to take my sig processor to 4.0 GHz (it says 4 GHz but that was from a seemingly stable OC). I have tried taking the multiplier to 18 and and by taking the base clock to 223, I have tried by taking the multiplier to 22.5 and by taking the base clock to 180 and still nothing. I then tried to let a program that came with my motherboard called Asus AI Suite II OC it and all it could get out was a 20 MHz increase in the base clock with the multiplier at 16. Am I doing something wrong?
The 1090T may do better with a HTT plus Multiplier OC. I've had real good luck with mine at 250 x 16 @1.41 Vcore.

Never trust a utility to OC as they're rarely optimal and often over volt. Always OC in the bios.

How much Vcore are you using? How are temps under load?
 
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post #3 of 7
Thread Starter 
I have my vcore at 1.45v. My temps under load at stock never get above 50.
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Shnayvetchen
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post #4 of 7
Have a look see at my thread on my 1100T, should be similar to your 1090... Ive been at it for 2+ weeks trying to get over 4.1 myself, these things take lots of time and patience... I did manage 3.9 then 4.0 pretty quickly, you just have to tick it up slowly. If your chip is like mine, you should get 400mhz right out the gate with almost no extra voltage.
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post #5 of 7
Every chip is different, some will take the max 1.55v to get stable at 4GHZ and some will coast there on stock voltage, but if you are failing stress tests (you didn't say which ones or how) and getting blue screens, then you likely need more voltage. Start by bumping it by 0.01v at a time, then stress again.

Couple things.

*Keep HT Link 2000Mhz +/- 100Mhz
*CPU-NB needs to be minimum of 3x base speed of RAM.
800Mhz (1600Mhz RAM) x 3 = 2400Mhz CPU-NB.
*Make sure you are reading the right temps.
post #6 of 7
venraw's post has been moved into a new thread. Please create your own thread for your own issue.

To kabj06: Please wait 24 hours before bumping any thread. This is an enforced rule on OCN.

-xd
post #7 of 7
Thread Starter 
Quote:
Originally Posted by ALUCARDVPR View Post
Every chip is different, some will take the max 1.55v to get stable at 4GHZ and some will coast there on stock voltage, but if you are failing stress tests (you didn't say which ones or how) and getting blue screens, then you likely need more voltage. Start by bumping it by 0.01v at a time, then stress again.

Couple things.

*Keep HT Link 2000Mhz +/- 100Mhz
*CPU-NB needs to be minimum of 3x base speed of RAM.
800Mhz (1600Mhz RAM) x 3 = 2400Mhz CPU-NB.
*Make sure you are reading the right temps.

The stress test I am using is the stress test based on F@h. I use this because this represents the type of abuse the processor is going to take on a day to day basis.

I have my HT Link at 2000 MHz (that is the highest I can keep it stable at). My Northbridge is at 2.8 GHz. I also read that some people had success getting 4.0 GHz pulling the RAM speed down to 1000 MHz (the speed was made up for by tightening the timings). Sure enough I tried this and my OC was stable. My base clock is 235 and my multiplier is at 17. My RAM speed is 980-something but my timings are at 5-5-5-17. I am testing it and it has been going strong for 10 minuets.

I forgot to add my vcore is 1.5v
Edited by kabj06 - 10/3/11 at 10:17am
Shnayvetchen
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Shnayvetchen
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