Is my PSU under powered?

hi guys i got all the information here for my power supply can you help me out and tell me if its powerfull enough for what im running.

1st of all its an atx PSU 400 watt
+3.3v +5v +12v -5v -12v 5VSB
28A 40A 17A 0.3A 0.8A 2A

I have 2dvd RW
140 gig HD
radeon x1300 AGP
2x 512 slots of ddr ram
2 case fans

if you could help me id be greafull, also if you no of a good place to get more powerfull PSU's.

cheers
liam

 

I run an Antec 500W on my desktop(sig) and it has three fans and I have no problems.

I'm no expert so I can't say for sure, but it looks fine.

 

This might help.

Power Supply Calculator.
Here is a neat Wattage Calculator... http://www.jscustompcs.com/power_supply/
Mg thread 74756.

Check using this nifty calculator to make sure http://www.extreme.outervision.com/psucalculator.jsp
MG thread 90323

Remember not to skimp on quality as far as PSUs go. It's a very important component.


Otherwise a google search on "PSU calculator", or similar, is bound to turn up many more links. Bazza