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How do I get a NB higher

post #1 of 30
Thread Starter 
core is at 4.2 1.5v 18x234 stable with 6 hours of prime.

Current NB 2574 = 11x234 1.225v

my problem is once i go the next multi which is 2808 one of my cores fails with a rounding error within 5 mins

ive tried all the way to 1.5v on my nbvid but that doesnt help with stability

am i at a wall?
Edited by exzited - 7/18/11 at 10:21am
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post #2 of 30
cpu-nb needs to go up to 1.3V and you should be golden
    
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post #3 of 30
Are you increasing NB or CPU/NB voltage?
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post #4 of 30
Thread Starter 
Quote:
Originally Posted by huhh View Post
Are you increasing NB or CPU/NB voltage?
cpnbvid. i already tried 1.5v which is the same as my processor
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post #5 of 30
cpu-nb should go to like 1.3 no higher, no lower
nb should go to auto
    
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post #6 of 30
I think this board is what is holding you back. It is a heatsinked VRM 4+1 power phase. It can overclock and do it without blowing up, but you are already pushing it beyond it's power limits.

Quote:
EDIT: Low end Gigabyte boards are really not built to overclock like this.
Do you have a 4 pin or 8 pin CPU plug? What kind of PSU?

What is your FSB set too? 2800 normally takes between 1.30v and 1.35v on that CPU depending on the frequency you are running. At 4.2 GHz, mine requires 1.3125v to run stable at 2800.

Is your memory stock timings and frequency? Have you checked to see if the voltage is correctly set?

You could also try increasing CPU PLL voltage since it appears you are running a high overclock and FSB.

Lastly, are you watching your temps? How hot is it running?
 
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post #7 of 30
If your cpus is deneb core, the limit for that NB is 2800 with luck.

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post #8 of 30
Quote:
Originally Posted by saint19 View Post
If your cpus is deneb core, the limit for that NB is 2800 with luck.

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This is false. I run 3070.
 
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post #9 of 30
Thread Starter 
Quote:
Originally Posted by BWG View Post
I think this board is what is holding you back. It is a heatsinked VRM 4+1 power phase. It can overclock and do it without blowing up, but you are already pushing it beyond it's power limits.



Do you have a 4 pin or 8 pin CPU plug? What kind of PSU?

What is your FSB set too? 2800 normally takes between 1.30v and 1.35v on that CPU depending on the frequency you are running. At 4.2 GHz, mine requires 1.3125v to run stable at 2800.

Is your memory stock timings and frequency? Have you checked to see if the voltage is correctly set?

You could also try increasing CPU PLL voltage since it appears you are running a high overclock and FSB.

Lastly, are you watching your temps? How hot is it running?
memory is stock cl9 1600mhz, should i drop that to cl7 1300

my temps are fine they are 28 idle 52 load

its a 8 pin

also i can boot with 1.25nbvid and no matter what voltages i add to it, it will fail prime within 5 mins and intel burn test on the second caluculation
Edited by exzited - 7/18/11 at 12:28pm
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post #10 of 30
What about the HT ? shoud be around 2000. Since you oc via fsb, the HT auto won't work. 2000 / 234 = 8.5

What made you OC via fsb ? Cpu multi couldn't get you 4.2 stable ?
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