Do I need more than 600W?

[over288]

Hi, Im building a new comp

ASUS P5B Delux
E8500
2x 3870s
2GB PC2-8500
a TV Tuner Card
4 HDDs (2x 160GB, 1 250GB and 1 500GB)
Creative X-Fi XtremeGamer
a dvd burner
and around 3 case fans


Would a 600W PSU from thermaltake do the job?
Or should i get a 650W or maybe even 750W?

Thanks in advance

 

[MarcVenice]

Which Thermaltake ? What's your budget ? 600w will probably cut it, but if you can get more, or a better qaulity for the same price, then why not ? We're probably talking 350w or so under load, perhaps more like 400w in a game like Crysis.