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Phenom II x3 740BE OC

post #1 of 12
Thread Starter 
4th core is unlocked.

Cpu running @ 3.6ghz

vcore in bios 1.42
vcore in windows CPU usage 0% 1.42
vcore in windows CPU usage 100% 1.5

Max Temp was 58C

I tried disabling LLC but voltage still rises. Is there another way to stop vcore from rising?

NB @ 2.4ghz
NB 1.25v (1.2 is default)

HT 2.0ghz
HT 1.2v (default)

I have CL7 1600mhz ram. I tried to lower the ram speed to 1333mhz and lower vcore but cpu won't stay stable.

Is there anything I can do to run @ 3.6ghz without having to run vcore @ 1.5v?
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post #2 of 12
in my prior experience with one of the first phenom ii 720s, i find in my case that after 3.5 Ghz at 1.425v, much more voltage is needed to go any higher, like to get 3.7 i had to go 1.5v

Alas, on a side note, they improved their process since then and i can now run my x6 at 4 ghz on 1.375v.
     
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post #3 of 12
I get the same difference in bios vs windows temps on my unlocked 720BE. I'm at 1.45v in bios, but hit 1.52 during load.
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post #4 of 12
I need a new mobo to unlock my 4th core

Stupid Poorness.....
post #5 of 12
Thread Starter 
Quote:
Originally Posted by ChronoBodi View Post
in my prior experience with one of the first phenom ii 720s, i find in my case that after 3.5 Ghz at 1.425v, much more voltage is needed to go any higher, like to get 3.7 i had to go 1.5v

Alas, on a side note, they improved their process since then and i can now run my x6 at 4 ghz on 1.375v.
yeah, i'm just at 1.4v running @ 3400mhz right now. Probably going to stick with 3400mhz until I can manage to run 3600mhz without hitting 1.5v. It runs 7c cooler, too.

I can run 3600mhz with 1.47vcore but it won't stay stable for an hour on prime.
Edited by nitd_kim - 12/22/10 at 2:59pm
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post #6 of 12
Thread Starter 
I oc'd to 3.6ghz with just bus speed and it looks stable with 1.47vcore.

http://valid.canardpc.com/show_oc.php?id=1552237

Prime been going on for like 15 minutes now I hope it can go for another few hours until I feel like it's stable. When it seems stable, I'm going to try lowering the voltage 1step down and see how it reacts.

I'm trying to find a magical spot with FSB and multiplier that would run 3600mhz with little voltage...

EDIT: so far so good... I want to lower my NB voltage and cpu voltage. let's see what happens...
Edited by nitd_kim - 12/23/10 at 5:35pm
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post #7 of 12
Thread Starter 
I'm trying to find out what settings would be perfect for 3.4ghz, and I ran prime overnight and results say it crashed after 9 hours of running. What should I try first? Should I increase voltage for cpu, nb, or ram?
Edited by nitd_kim - 12/25/10 at 1:39pm
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post #8 of 12
my MB should arrive in 1 1/2 weeks, I have the same chip
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post #9 of 12
Thread Starter 
Quote:
Originally Posted by Mit Namso View Post
my MB should arrive in 1 1/2 weeks, I have the same chip
quick tip of this mobo: for Load Line Calibration, set it to Normal if you want the voltages to not change while the cpu is in Load. if set to slight, disabled, or auto, voltage will jump up when you're in load.
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post #10 of 12
Try setting LLC around 25-33%-I have found this to be the optimal setting for the max overclock on Asus(ASrock) boards. Auto I believe sets it at 50%.
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