Power supply reccomendations

[minix69]

I have recently built a new pc and I'm going to add another 5870. just wanting some power supply recommendations or is the one I have enough?system is...

phenom II x6 1100t 3.3(overclocked by turbo key to 3.81)
xfx 5870
8gb crucial ballistix ddr3 1600mhz
samsung 7200rpm sata2 500gb
asus m4a89td pro usb 3.0
xfx 650w modular psu
One dvd burner
acer 23" led lcd monitor
adding a sapphire 5870 crossfired pcie 2.0 both 16x

 

[o1die]

xfx is pretty good, similar to corsair. I would try it first.

 

[minix69]

it worked fine but i had a buncha people tellin me no way is 650 enough. i checked with extreme psu calculator and it said i only needed 600.

 

[obsidian86]

you could run a 5970 on 650 for 2 5870's 650 is enough amd themselves even recommend 600 watts

 

[minix69]

i did new egg psu calculator though and it said like 816w??