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Stability issue on non-overclocked system after power supply change.

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  • Power Supplies
  • Overclocking
  • Product
Last response: in Overclocking
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July 1, 2010 1:08:20 PM

I'm not going to pretend I know a thing about voltages, etc. Even though my system isn't overclocked, I figured this would be the best place to ask as it pertains to stability.

I had a stability problem on my system which I was able to rectify by playing with the voltages some. I never got it 100% stable though, but close. Recently my power supply decided to die on me. So, I bought a new one, now every bit of stability I had went out the window. I'm unable to attain the same stability I had on my old power supply.

With everything set to Auto, I get this. Any help is appreciated.

  • CPU: 1.225v
  • DRAM: 1.85v
  • VTT: 1.375v
  • Chipset: 1.250v

  • ASRock Penryn1600SLI-110dB
  • Corsair XMS2 6gb (2x2gb + 2x1gb)
  • Intel Core 2 Duo E8400








  • More about : stability issue overclocked system power supply change

    July 1, 2010 1:22:55 PM

    HOLY SH^T!!!!
    your problem is right there!!!
    in hardware monitor it says the 12volt rail is running at 5.6 - 5.8 volts
    WTF?
    what brand/model is your psu?
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    July 1, 2010 1:49:34 PM

    Was my old one faulty too? What are the odds of having two power supplies in a row that run at 5.xv?
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    July 1, 2010 2:06:40 PM

    cdbarrett said:
    Was my old one faulty too? What are the odds of having two power supplies in a row that run at 5.xv?


    Did your old psu make your computer completely unstable?
    because psu's are supposed to have at least 11.5 volts on the 12 volt rail.
    im guessing your old one did have 12v on the 12v rail but your new one is faulty so go get it replaced or get your money back.
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    July 1, 2010 3:19:07 PM

    The hardware monitor in the bios shows 12v as ~11.95v, while the hwmonitor software shows it as ~5v. Which is right?
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    July 2, 2010 1:13:43 AM

    cdbarrett said:
    The hardware monitor in the bios shows 12v as ~11.95v, while the hwmonitor software shows it as ~5v. Which is right?


    Usually both are right but since HWmonitor is saying its 5v then maybe that ones right, id just get it replaced. Since it is unstable you should get it replaced or get a new one.
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    July 2, 2010 12:14:01 PM

    Went down to Best Buy and got a new one. Same exact thing.
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    July 2, 2010 12:20:22 PM

    does it work?
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    July 2, 2010 12:38:53 PM

    Nope, same issues, 5v and unstable.
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    July 2, 2010 12:40:53 PM

    New one is from Corsair if that makes any difference.
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    July 2, 2010 12:51:35 PM

    corsiar?
    thats supposed to be a really good brand too...
    your 12v rail is still at 5v....
    do you think you could try your new psu on a different computer?
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    July 2, 2010 1:25:06 PM

    Tried both the original one I had, and the new Corsair one. Both seem to work fine; showing close to 12v on the other system.
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    July 2, 2010 1:26:59 PM

    Can't edit my posts, sorry for the multiple posts.

    I have no idea if these are safe voltages or not. I changed DRAM to 2.08v and VTT to as low as it'd go 1.24v. That allows prime95 to run for about 40-50mins before the rounding error occurs.
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    July 2, 2010 1:27:43 PM

    if both psu's work fine then it isnt the power supply making your pc unstable, its the motherboard.
    im guessing something has been damaged or worn out in your mobo, which means your gonna need a new one.
    or you could use the other system, if possible.
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    a b K Overclocking
    July 2, 2010 1:41:07 PM

    interesting. I wonder if my PSU is faulty.
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    a b K Overclocking
    July 2, 2010 2:45:04 PM

    I know right. That's why I'm starting to think I have a major problem with PSU or motherboard :( 
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