Big Problem with Dual core Voltage

vertigofm

Member
Jan 31, 2006
198
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Hi everyone, here are my specs first off:

Lian Li 7077
NF4 Ultra-D
Opteron 170 (Gonna OC)
Mushkin XP Redline PC 4000 3-2-3-8, (2X 1 gig sticks)
PC power and cooling Turbo-Cool 510 ASL
x1900xtx

Ok here is what I noticed. I first was trying to OC my Opteron 170, and noticed that core 1 always failed at even a little bit above stock speed... weird but no biggie, just a dud right? I think not... I have been relying on my BIOS and AMD power monitor to show me voltages, AMD's power monitor always shows me as getting 1.35 V on both cores even though my BIOS setting is at 1.475... Now my bios shows me at 1.46... It was recently that I installed SiSoftware Sandra. I was looking through it and I noticed that core 0 voltage was 1.46..... So the BIOS was right, and AMD's wrong. But what my BIOS didn't tell me was that was only for Core 0... Core 1 is only getting 1.18V.... Which must explain my poor OC results for only that core and random system crashes even at stock speeds. I have installed the SP2 hotfix patch for dual cores and the AMD patch for dual core support. I know my BIOS and system supports dual core because it registers, but what on earth is going on? And most importantly how can I fix it? Is this a problem with my power supply? My motherboard or my CPU? Again thank you for all the help you guys give me, much appreciated!
 

TrevorRC

Senior member
Jan 8, 2006
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This could explain a LOT of the overclocking problems.

Though if I remember, both of them should share the voltage, should they not?
Curious.
-T
 

Amaroque

Platinum Member
Jan 2, 2005
2,178
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Interesting. I get a .000v to .001v variance between cores (Sandra). Unless someone has a reasonable explanation, I'd strongly consider RMA.
 

F1shF4t

Golden Member
Oct 18, 2005
1,583
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Also what setting u change the voltage on? there are 2 settings on the ultra-d.
 

vertigofm

Member
Jan 31, 2006
198
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Cool N Quite is off, and I change the voltage setting on CPU Vid Control.... Also frickin damn AMD said that if it works at stock settings, even though the voltages are off- they can't give me a new one- which is BS cause then I cant OCit
 

Amaroque

Platinum Member
Jan 2, 2005
2,178
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Originally posted by: vertigofm
Cool N Quite is off, and I change the voltage setting on CPU Vid Control.... Also frickin damn AMD said that if it works at stock settings, even though the voltages are off- they can't give me a new one- which is BS cause then I cant OCit

Actually, AMD is rite. It works at stock. It works at the speed grade you paid for. If you wanted a guaranteed speed, you should have bought a higher speed CPU.

You got what you paid for. A free OC is a bonus. I've had CPU's that didn't even OC 33 MHz, but I didn't try to RMA a CPU because it wouldn't run beyond the advertised speed. :eek:

Edit: I miss read the OP. I thought it was failing at stock (not just failing to OC).
 

3chordcharlie

Diamond Member
Mar 30, 2004
9,859
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Originally posted by: vertigofm
Cool N Quite is off, and I change the voltage setting on CPU Vid Control.... Also frickin damn AMD said that if it works at stock settings, even though the voltages are off- they can't give me a new one- which is BS cause then I cant OCit

What BS?

It works perfectly!

In fact simply by OCing it at all, which you've tried, I *think* you've already voided the warranty.

I would feel perfectly fine RMAing a chip that I had OC'd if I hadn't touched the voltage at all, but the fact is even that is likely outside the allowances of the warranty.
 

vertigofm

Member
Jan 31, 2006
198
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Originally posted by: 3chordcharlie
Originally posted by: vertigofm
Cool N Quite is off, and I change the voltage setting on CPU Vid Control.... Also frickin damn AMD said that if it works at stock settings, even though the voltages are off- they can't give me a new one- which is BS cause then I cant OCit

What BS?

It works perfectly!

In fact simply by OCing it at all, which you've tried, I *think* you've already voided the warranty.

I would feel perfectly fine RMAing a chip that I had OC'd if I hadn't touched the voltage at all, but the fact is even that is likely outside the allowances of the warranty.

It's BS because Voltages should be nominal