What size PSU should I get for this setup?

[samhain]

Hello, I'm looking to buy a new Power Supply to replace my recently deceased one. My specs are as follows:

Biostar TA790GX 128m Main board
Athlon64 X2 5200+ OC'ed to 3.10ghz
2 Sapphire Radeon HD 3870 X-fire'd
6 Gb PC26400 Ram
1 DVD-RW drive
1 5400rpm 1.5Tb HD
4 110mm case fans (3 with LEDs)
1 Internal Media Card reader

I tried the Newegg PSU calculator but it didn't have my GPU's listed. My PSU was a 650w but it died a week after I upgraded to the dual graphics cards from a Geforce 8800gs.

 

[slcmike]

This will help answer your question:
http://www.tomshardware.co.uk/forum/284314-10-power-supply-guides-info

 

[cygone]

500w is plenty