Help figuring proper PSU size

[Kepler]

I'd like to get some feedback on PSU size I should be using.

Soyo KT600 Dragon Plus v1.0
AMD 2400+ mobile
512mb Kingmax DDR400
1 7200rpm hard drive 40g
floppy
cd-rw drive
1 - 120mm case fan
modem
sound card
ATI9800 vid card

will eventually get
dvd burner
SATA hard drive, maybe 2
vid capture/tv card

Also, can an inadequate power cause RAM errors or just bad RAM?

Thanks

 

[Lorand]

You can see the total power usage here: http://takaman.jp/D/?english

 

[Kepler]

Thanks for the link Lorand.

 

[jancz3rt]

500watt +

I think that 500watt + and of good quality and rail ratings should be more than enough.

JAN