They budget mar... then there's the DVD writer...
Also with current systems - 400W will not cut it if you decide to add more HDD in future. You'll need at least 600W >
And please ... do not use funny PSUs eg. iCute or other weird brands. I don't really recommend FSP either. Using 1 on my dad's PC, starting to give problems already.
I last time backup on DVD . Some files lost . Now scare liao.
Anyway , once bitten twice scare... Now more play safe liao ...