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Voltage problem!!! D<

post #1 of 12
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So ive been experimenting with overclocking a Amd anthlon II x2 Ive gotten up to 3.8ghz stable here are some images

By rompf at 2011-07-31

By rompf at 2011-07-31

By rompf at 2011-07-31

but when i try to hit 3.9ghz with a voltage of 1.520 it goes into windows fine but i check cpuz and it says it has a voltage of 1.472 and i run a stress test how it is but it crashes any ideas why it wont allow me to go past the 1.472 voltage??
    
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post #2 of 12
What motherboard?

You're experiencing what's called vdrop. It's normal. You'll have to up your voltage a little higher, to compensate for the droop. Try 1.55v, 1.57v, etc....until you get the voltage you're after. Up to 1.55v load is safe on your chip (and 1.45v CPU-NB).
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post #3 of 12
Thread Starter 
Quote:
Originally Posted by pioneerisloud View Post
What motherboard?

You're experiencing what's called vdrop. It's normal. You'll have to up your voltage a little higher, to compensate for the droop. Try 1.55v, 1.57v, etc....until you get the voltage you're after. Up to 1.55v load is safe on your chip (and 1.45v CPU-NB).
Thanks, I will try that... My motherboard is an MSI NF750-G55 (i know its not the best motherboard to overclock on)
    
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post #4 of 12
Thread Starter 
PERFECT 1.560v did it for the vdrop and i got it to 1.520 now im going to run some benchmarking see how it goes thank you pioneerisloud
    
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post #5 of 12
Quote:
Originally Posted by Rompf View Post
PERFECT 1.560v did it for the vdrop and i got it to 1.520 now im going to run some benchmarking see how it goes thank you pioneerisloud
No problem. Hopefully you can break stable with that.

And your board should be just fine with your Athlon II x2.
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post #6 of 12
Thread Starter 
FINALLY after hours and hours of so much tweaking and researching i got it stable for now at 3.9 ghz with the stress benchmarkin my goal was to get to 4.0ghz but sadly i dont think thats possible because of my voltage limitations.
    
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post #7 of 12
Quote:
Originally Posted by Rompf View Post
FINALLY after hours and hours of so much tweaking and researching i got it stable for now at 3.9 ghz with the stress benchmarkin my goal was to get to 4.0ghz but sadly i dont think thats possible because of my voltage limitations.
Well, another thing you can try is dropping your CPU multiplier down, bringing your reference clock (HTT / FSB) up more to get the same clock speed. This will obviously affect RAM and NB speeds too. The goal is to tweak more NB speeds, and better RAM speeds too.

Or if you're not afraid of an early death of the CPU (say like 8 years instead of the projected 10 year lifespan), push more voltage through it. I sent 1.60v 24/7 through my Athlon II x4 for about 6 months. It's still alive and kicking with its new owner at the same clocks and voltages.
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post #8 of 12
Thread Starter 
Quote:
Originally Posted by pioneerisloud View Post
Well, another thing you can try is dropping your CPU multiplier down, bringing your reference clock (HTT / FSB) up more to get the same clock speed. This will obviously affect RAM and NB speeds too. The goal is to tweak more NB speeds, and better RAM speeds too.

Or if you're not afraid of an early death of the CPU (say like 8 years instead of the projected 10 year lifespan), push more voltage through it. I sent 1.60v 24/7 through my Athlon II x4 for about 6 months. It's still alive and kicking with its new owner at the same clocks and voltages.
Well i am planning of getting a new mobo and cpu in a couple of years when i save up enough money so i guess i could try that but im going to play some games with this first and run some more benchmarking later to see if its completeley stable and if it is I will try that... Thanks for the advise!
    
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post #9 of 12
Quote:
Originally Posted by Rompf View Post
Well i am planning of getting a new mobo and cpu in a couple of years when i save up enough money so i guess i could try that but im going to play some games with this first and run some more benchmarking later to see if its completeley stable and if it is I will try that... Thanks for the advise!
Get that NB speed up as high as you can. It'll make just as much, if not more impact on performance than CPU speed alone will. Your CPU-NB voltage is safe up to 1.45v (more if you don't care about the lifespan of the CPU, as already stated).

With enough voltage, you should be able to reach 2800MHz NB stable (if not more) (with up to 1.45v CPU-NB), and you should be able to get that same 3900MHz CPU clock, or close to it.

You could try:
280 x 14 (3920MHz CPU)
280 x 10 NB (up your CPU-NB voltage as needed, and regular NB just a few notches)
280 x 7 for your HT Link
280 x 6.67x RAM divider (DDR3-1333 divider) puts you at DDR3-1866 (probably won't run stable)
280 x 5.33x RAM divider (DDR3-1066 divider) puts you at DDR3-1492
280 x 4x RAM divider (DDR3-800 divider) puts you at DDR3-1120

290 x 13.5 (3915MHz CPU)
290 x 10x NB
290 x 7 HT Link
1333 divider gives you DDR3-1933
1066 divider gives you DDR3-1546
800 divider gives you DDR3-1160

300 x 13 (3900MHz CPU)
300 x 10 or 9 for NB (3.0GHz / 2.7GHz)
300 x 7 for HT Link (2100Mhz)
1333 divider gives you DDR3-2000
1066 divider gives you DDR3-1600
800 divider gives you DDR3-1200
Edited by pioneerisloud - 7/31/11 at 8:25pm
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post #10 of 12
Thread Starter 
Quote:
Originally Posted by pioneerisloud View Post
Get that NB speed up as high as you can. It'll make just as much, if not more impact on performance than CPU speed alone will. Your CPU-NB voltage is safe up to 1.45v (more if you don't care about the lifespan of the CPU, as already stated).

With enough voltage, you should be able to reach 2800MHz NB stable (if not more) (with up to 1.45v CPU-NB), and you should be able to get that same 3900MHz CPU clock, or close to it.

You could try:
280 x 14 (3920MHz CPU)
280 x 10 NB (up your CPU-NB voltage as needed, and regular NB just a few notches)
280 x 7 for your HT Link
280 x 6.67x RAM divider (DDR3-1333 divider) puts you at DDR3-1866 (probably won't run stable)
280 x 5.33x RAM divider (DDR3-1066 divider) puts you at DDR3-1492
280 x 4x RAM divider (DDR3-800 divider) puts you at DDR3-1120

290 x 13.5 (3915MHz CPU)
290 x 10x NB
290 x 7 HT Link
1333 divider gives you DDR3-1933
1066 divider gives you DDR3-1546
800 divider gives you DDR3-1160

300 x 13 (3900MHz CPU)
300 x 10 or 9 for NB (3.0GHz / 2.7GHz)
300 x 7 for HT Link (2100Mhz)
1333 divider gives you DDR3-2000
1066 divider gives you DDR3-1600
800 divider gives you DDR3-1200
That is alot of info i will try that out tomorow and my ram is KHX1600C9D3 so it can probly take it, Im going to try these configurations tomorow and tweak it to see if i can get it to work... thank you you have been very helpfull
    
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