Undervolt not doing $&!^

jack bauer

Senior member
Mar 17, 2006
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Using the program AiBooster (I like sooo much better than pcprobeII). Lowered my Vcore to 1.3375 in the popup menu but it says 1.39 in the 'speedometer' above. Is there some kinda of overvolt function enabled? Why? Only lowered my CPU temps 1-2C, don't want to undervolt too much. I thought I read Opty 170s are suppose to be 1.30-1.35 not OCed? What your your non Opty 170 Vcores? What is the safe range?


PS can I use this program to do all my OCing w/out BIOS changes?
 

TheRyuu

Diamond Member
Dec 3, 2005
5,479
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Anything up to 1.5v is safe.

On the A8N32 I suggest you use the CPU Overvolt option as that enables the 8 phase power and some stable(er) voltages. For 1.335 it would be 1.135+200mv=1.335. Now under load it should be almost that, and it gets slightly higher in idle, but it seems more stable voltages.
 

jack bauer

Senior member
Mar 17, 2006
324
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I still don't understand what is correct. Setting in BIOS are:

Overvolt CPU Core disabled
NB core - dis
hypertransport - dis
ddr vcore 2.6V
FID/VID manual
CPU Cvore 1.350V

The same 1.350V Vcore is the same reading in Voltage under 'tuning' in AiBooster. But the MAIN window, that show the gauges, show a Vcore of 1.41 or 1.42 (used to show 1.39, not sure why this changed). What reading is accurate? ps. cpuz also shows 1.41


edit update: changed Vcore to 1.300V and the gauge reads 1.36V core, why is there a difference and is this normal?
 

Ionizer86

Diamond Member
Jun 20, 2001
5,292
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Yeah, it's perfectly fine. Some boards tend to undervolt or overvolt a set amount from what you've set in Bios. Sensor readings, such as what CPU-Z report, should be the most accurate.
 

lopri

Elite Member
Jul 27, 2002
13,314
690
126
AI Booster is a piece of junk. Really. Do yourself a favor and use Clockgen, or better yet BIOS. Or you can use this new, wonderful little app called A64Info.

http://avala.yubc.net/~lukija/A64Info.rar (curtesy of lukija @XS)

But be careful. Unlike DFI boards which resets the configuration upon reboot, A8N32-SLI actually saves the settings you set in Windows to the BIOS.
 

jack bauer

Senior member
Mar 17, 2006
324
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why is AiBooster a piece pf junk? can you OC using just this program, or is it better to use BIOS or another?
 

jack bauer

Senior member
Mar 17, 2006
324
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0
What is normal Vcore flux? Mine reads 1.34, then 1.36, then 1.34, then 1.32....what's the deal?
 

lopri

Elite Member
Jul 27, 2002
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That's not normal for ASUS. That's an unheard of, unprecedented, extremely stable vcore from ASUS for dual-core CPUs. For instance, on my A8N-SLI Premium (now gone) the vcore used to dance from 1.45-1.32-1.56-1.29-1.52-_)*&Y(&*@_#$.. like that. Single-core CPUs are somewhat handled better, however. (which, BTW, is just natural)
 

lopri

Elite Member
Jul 27, 2002
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690
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Oh and for your previous question: Let's put it this way. Try increasing/decreasing your VDIMM (memory voltage) by 0.1 using AI Booster in Windows. And see it for yourself. Of course it's just an example.

 

jack bauer

Senior member
Mar 17, 2006
324
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0
Something is wrong then. I lower my Vcore in BIOS to 1.285. My gauge reads thought this. with ~ 30 seconds time:

1.34, 1.36, 1.36, 1.36, 1.34, 1,34, 1.36, 1.32, 1.34, 1.34 - is this flux a sign of instability? how do I fix this?

Also FSB flux's but only after the decimal. 200.91, 200.00, back and forth.