NB(Northbridge) and SB(Southbridge) voltages going crazy

Ok,this is the problem.

I have pc probe II,and almost every time I start CPU-Z, SB and NB voltages going crazy for a sec or two,and sometimes just randomly goes up and I have to restart my PC.


I have O.C my PC from 2.5 GHz to 3.0 GHz stable, prime95 3 hours,and all my voltages are set to manual,so how can they spike from time to time.


Loadline calibration is disabled.
With the stock values I have the same problem.
Is there any other software that measures voltages on a motherboard ?


System info:

Motherboard: Asus Rampage formula
Processor: E5200 @2.5 Ghz Overclocked @ 3.0 Ghz
Memory:Kingston 2GB DDR2 1066 HyperX
Hard Drive:320 GB WD + 640 GB WD + 500 GB WD +320 GB WD
Graphics Card: ATI X1800 512 MB DDR3
PSU:Be quiet 500w
OS: Win 7 + XP SP3 (Dual boot)
4 answers Last reply
More about northbridge southbridge voltages crazy
  1. Tried a CMOS reset?
  2. sounds like a cheapo power supply problem
  3. rand_79 said:
    sounds like a cheapo power supply problem

    +1 Especially with 4 hard drives.
  4. Tried a CMOS reset?

    yes,no effect.

    Especially with 4 hard drives.

    Ok,will try with just one drive.

    Thanks for the suggestion people

    Is there any other software that measures voltages on the motherboard?
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