Help Choosing: Corsair HX520 or HX620 PSU?

[Deadalus]

My knowledge of power needs is non-existent , so I could use some help. Based on the following system specs, will the HX520 be enough, or would I be better of getting the HX620?

AMD Athlon X2 4600+
ASUS A8N-SLI Premium
2GB Crucial Ballistix RAM (4x 512MB @ 2.8v)
nVidia GeForce 8800GTX

Creative X-FI Extreme Gamer - PCI
Linksys Wi-Fi Card - PCI
Hauppauge WinTV-NOVA-T 500: Dual Digital TV tuner - PCI

2x SATA hard drives
2x IDE DVD writers

6x USB devices
3 or 4 case fans

Thanks for your help.

 

[Deadalus]

Thanks guys, it seems we have a bit of disagreement

Would the 520 be cutting it fine for future upgrades?

 

[Deadalus]

Thanks guys.