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Power Supply Q's - MBM vs BIOS.....

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Bailey

Member
Joined
Dec 4, 2003
After reading the power supply treatise yesterday I decided to check the voltages of my power supply. I got some very odd readings. MBM and the BIOS widely disagreed.

BIOS

12v = 11.64
5v = 5.02
3.3v = 3.31
AGP = 1.48
CPU = 1.72 (t-bird 1.2ghz - 100*12)

MBM

12v = 11.33
5v = 3.06
3.3v = 3.33
CPU = 1.69
AGP = 1.49

They're all close except the 5v - what the heck?

And if the 12v is really 11.5(ish) then how can it run stable?

System is running a Shuttle AN35N Ultra (NF2 400) -

CPU as above
FX5900
Max 200gb HDD
CD/DVD burner combo
4 case fans (light load, thermaltake low noise type 80mm - .1a)
1 CC light

The power supply is an Aspire 550w & the specs are:

12v = 34a
5v = 30a
3.3v = 28a

I plan on checking the 12v & 5v with a multi meter but these reading seem a bit strange to me. Is it just that the supply is a POS? (goes against the reviews I've read such as: http://www.envynews.com/index.php?ID=588&page=3 )
 
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