Do I need a new PSU for this setup?

[D3z]

Hi, I'm starting to be confused. Need some help with the PSU.

I'm currently running the rig below on a 600 watt PSU:
Q6600 @ 3.6Ghz - 1.41 v
2x2GB Geil Evo one
Abit QuadGT X38
HD 4850
Soundblaster X-fi
4 SATA II HDD
2 DVD RW drives
1 Water pump - Swiftech 655
5 Noctua fans
6 Cathode Lights

I'm planning to purchase another HD4850 to run crossfire. Will the 600 watt PSU be able to handle Crossfire? I've used the psu calculator and I'm not sure how accurate it is - if its any accurate I'll have to get myself a new PSU .

On the other hand, I've seen other sites where there are those who are using HD4870 xfire on 620watts .

I cant find my model online, but its the 600watt version of:
http://www.newegg.com/Product/Product.aspx?Item=N82E16817814015
(I cant go with the mainstream OCZ, here in Asia, we're limited to the PSU brands)

Can 600watt handle my rig+upgrade?

Many thanks for the advice!

 

[device manager]

Your current psu is fine. Brent was only seeing 365W at the wall with his QC WC config. Factor in 80% eff and that is a 292W load on the psu.

http://enthusiast.hardocp.com/article.html?art=MTUzMSw5LCxoZW50aHVzaWFzdA==

 

[D3z]

Thanks for the info. and link!