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Help to stabilize unlock 720 BE core

post #1 of 27
Thread Starter 
Hey guys,

First sorry for my english

I need help to stabilize the 4th core unlocked of my Phenom II 720 BE on my Biostar TA790GX A3+. The memos are 2X2GB OCZ GOLD DDR3 1333Mhz. The CPU frequency are stock (200X14). I try drop NB and HT Frequency to 1600MHZ (2000MHZ default), set the memos voltage to 1.8V (1.6V default), I try too rise the cpu vcore to 1.5V (1.34 dafault) however, all without success. The BIOS is the last of Biostar site (78DAA420.BST). Run Prime95 and error occurs before the first minute

Thank you for attention!
post #2 of 27
Keep in mind that even if you make it pass Prime you may have issues in real aplications.
The usual advice is to up the voltage untill it makes no errors ,but it s risky and in same time may not do nothing Rise voltage in small steps.
You may have a defective chip with a core disabled for a reason.

LE: Ups didn t see you pumped 1,5 volts ,is more than enough don t go upper you will kill stuff.
Let the core locked and go for overclocking as it is.
Edited by Dromihetes - 4/14/11 at 10:13am
   
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post #3 of 27
Thread Starter 
Quote:
Originally Posted by Dromihetes View Post
Keep in mind that even if you make it pass Prime you may have issues in real aplications.
The usual advice is to up the voltage untill it makes no errors ,but it s risky and in same time may not do nothing Rise voltage in small steps.
You may have a defective chip with a core disabled for a reason.

LE: Ups didn t see you pumped 1,5 volts ,is more than enough don t go upper you will kill stuff.
Let the core locked and go for overclocking as it is.
First place, thank you for answer.

As I understand it, then you recommend me do not unlock the 4th core and work only with the same 3? But the performance difference of the 4th core is not worth it?

Greetings!
post #4 of 27
From what i understand...the jump from 2 to 3 cores is a big improvement but from 3 to 4 cores is not a huge leap...you are good with 3 cores, just go for a straight up CPU overclock (do you have a aftermarket cpu cooler?)
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post #5 of 27
the jump from 3 to 4 cores is a decent increase in performance but ........... it sounds as though your 4th core isn't stable. if your having to pump 1.5 vid into it at stock settings then your not going to be able to OC hardly at all.

i would leave it as a x3 and oc it like that as you will more than likely see a bigger gain in performance that way
post #6 of 27
Thread Starter 
Quote:
Originally Posted by amd-dude View Post
From what i understand...the jump from 2 to 3 cores is a big improvement but from 3 to 4 cores is not a huge leap...you are good with 3 cores, just go for a straight up CPU overclock (do you have a aftermarket cpu cooler?)
Quote:
Originally Posted by mastertrixter View Post
the jump from 3 to 4 cores is a decent increase in performance but ........... it sounds as though your 4th core isn't stable. if your having to pump 1.5 vid into it at stock settings then your not going to be able to OC hardly at all.

i would leave it as a x3 and oc it like that as you will more than likely see a bigger gain in performance that way
Yes, I have a aftermarket cooler.

It's a shame that I have to abandon the project to unlock the 4th core, because I was very hopeful. Even swapped the motherboard recently thinking about it!

How to overclock with only three cores I can not make up more than 230 FSB, any tips?

This will give more performance in games? Overclock by increasing the multiplier or increasing the FSB?
Edited by andretiton - 4/14/11 at 11:41am
post #7 of 27
Quote:
Originally Posted by andretiton View Post
Yes, I have a aftermarket cooler.

It's a shame that I have to abandon the project to unlock the 4th core, because I was very hopeful. Even swapped the motherboard recently thinking about it!

How to overclock with only three cores I can not make up more than 230 FSB, any tips?

This will give more performance in games? Overclock by increasing the multiplier or increasing the FSB?
Make sure if ur raising ur fsb that ur lowering ur ht, nb, and ram. Also u may have an fsb hole where it doesn't like certain fsb try 250x12 ht at 1600 nb at 1600 and ram at 533
post #8 of 27
Thread Starter 
Quote:
Originally Posted by mastertrixter View Post
Make sure if ur raising ur fsb that ur lowering ur ht, nb, and ram. Also u may have an fsb hole where it doesn't like certain fsb try 250x12 ht at 1600 nb at 1600 and ram at 533
I will try the settings, thanks. FSB hole? what is this?

Greetings!
post #9 of 27
Quote:
Originally Posted by andretiton View Post
I will try the settings, thanks. FSB hole? what is this?

Greetings!
It's basically an fsb that won't boot. Mine works from 200-225 but not 226-245. Then it works again from 246 til about 300.
post #10 of 27
Thread Starter 
Quote:
Originally Posted by mastertrixter View Post
It's basically an fsb that won't boot. Mine works from 200-225 but not 226-245. Then it works again from 246 til about 300.
Ok, I understand now. And about games? Do you recomend raise the FSB ou multi for better games performance?
Edited by andretiton - 4/14/11 at 5:19pm
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