+5V rail 15% out?

I've been told by someone that the voltage tolerance level on a PSU rail is 5% out from the actual voltage it's supposed to receive, but I seem to have 1 rail that is 15% out

According to SpeedFan and AIDA32 my +5V rail is receiving 4.25V - is this a problem that I should look at? If so, how can I fix it?

I've got a Tagan 480W PSU with the following connected to it:

5x 80MM case fans (3 light up, 1 controlled by the HDD cooler)
HDD Cooler (requires 1 molex connection)
Fan controller (requires 1 molex connection)
4x HDD's (3x IDE, 1x SATA)
1x CD-RW/DVD ROM drive
2x cathodes that change colour
Gigabyte GA-7N400 Pro2 motherboard
Athlon XP 2600+ (166FSB, being cooled by a Volcano 12 which is plugged into the fan controller)
Radeon 9800XT (running off the stand-alone molex for graphics cards)
Audigy 2 ZS
TV Card

[nibbles]

what problems are you having?
it's a little bit unusual because tagan's normally have a v.strong +5v line

Originally Posted by nibbles

what problems are you having?
it's a little bit unusual because tagan's normally have a v.strong +5v line

Havn't noticed any problems - only certain performance problems when running games.

[zoombini]

IT is quite low for 5v.
if it was 4.5-4.75 it might be alright, but thats way too low.

I'd reccomend actually checking it with a voltmeter as the software may be wrong.

[nibbles]

u checkin this in the bios or using the gigabyte monitor

Didn't know Gigabyte had their own monitoring software.

I'm using AIDA32 and SpeedFan to look at the voltages.

[zoombini]

Use a multimeter, it's accurate where as the software will be using values found on the board and can be wrong.

Borrowing a multimeter can save you purchasing a new PSU after worrying about it etc when in reality it may only be the software & associated bits that's wrong.

Then if the meter says it's that low, start unplugging things & turning on to see what the voltage is then, it could be poor regulation that's causing it & need replacing, but needs checking with a meter first.

Did I mention checking it with a meter?

[dilli-theclaw]

Originally Posted by zoombini

Use a multimeter, it's accurate where as the software will be using values found on the board and can be wrong.

Borrowing a multimeter can save you purchasing a new PSU after worrying about it etc when in reality it may only be the software & associated bits that's wrong.

Then if the meter says it's that low, start unplugging things & turning on to see what the voltage is then, it could be poor regulation that's causing it & need replacing, but needs checking with a meter first.

Did I mention checking it with a meter?

I dunno dude - I think he would be better off checking it with a multimeter