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PSU voltage Good/Bad?

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  • Components
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September 13, 2001 9:18:22 PM

I have the following PC:

Tbird 800@980
256/133 generic ram
MSI Turbo-r
Radeon 32 SDR AGP
WD 200BB 20GB 7200
Teac R56S SCSI CDR
DVD Pioneer 106S
S/B Live! 1024
Fop 32-1
3 case fans
Generic 350W PSU

I want to upgrade to a Tbird 1400 and a GF3 and i am planning on o/c both. I will also add a second HDD for raid and possibly a TV Card. IS the 350 Watt PSU i have in my box enough? Or do i need to upgrade to something bigger?

My PSU voltage right now according to MSI PC-Alert are:

Voltage: 0,35
+5v: 5.05 - 5.08
+3.3v: 3.40
+12v: 12.70

Thanks
Palpatine

More about : psu voltage good bad

September 13, 2001 9:37:23 PM

Those voltages only add up to 189w. Are you sure those are right?

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Rest in peace.</font color=green>
September 13, 2001 11:09:25 PM

Yes the number are correct. The PC is very stable. I have it o/c for 5 months and it never froze or anything like that. Is it possible for a 350W to give in reality 189? Can 189 power my pc correctly?

Palpatine

P.S. How do you calculate the Watts for the voltage?
September 14, 2001 4:25:14 PM

volts x amps = watts

You were giving me the amps, right?

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September 14, 2001 7:01:28 PM

Sorry i should have written it in my first post. They are volts. I think that the psu has the amps written on it. I will write the amps later when i finish cleaning my room......

Palpatine
Anonymous
October 12, 2001 5:15:03 PM

I seem to have the same problem. I just bought a new nobrand 250W case for my Asus A7V motherboard and my thunderbird 900mhz.

I had no problem with my previous Aopen case with 300Wpower supply, but since i change the case, the Asus PC probe shows that my voltage are very wrong :

+12 V : +12.43
+5 V : + 4.83
+3.3V : + 3.45
Vcore : + 1.79 so those are +/- ok

but :
-5 V : -5.706 V
-12V : -13.287V.

Can i change those somewhere ? is my power supply deffect ? My computer keeps freesing, could this be the cause ? (it was already crashing before, i need to reinstall windows).

Thanks a lot for your help.
October 12, 2001 5:46:32 PM

Don't ever buy generic PSUs, that's my advice :) 
And especially only a 250w for a Tbird.

Anyhow, those voltages are pretty normal for what you have. The PSU is not defective, probably just underpowered. Asus Probe has been known to give bad readings, however.

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October 12, 2001 7:48:51 PM

I've seen systems being built with 350w psu's and a 1.4ghz/GF3. It *WOULD* be nice if amd actually release the amperages the athlon pulls off all the rails at max usage...but they don't, so it's guessing time.

Everything I've ever read/tried to look up tells me to sweat a 1.4ghz/GF2 Ultra with anything less than a 400W psu, and even then you're pushing the limits if you have a couple of hard disks and a burner.

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!