Help! New PSU advice- for 5870 watercooled system

[claypigeon101]

Hey guys, just a quickie, can anyone help,
I have a Hiper 880w PSU and I think it's on the dodge... my secondary hard drive has failed and also my previous GPU (4870x2) died too, also my Wifi card has been going funny so i think it's the PSU.
I hope to get it tested but I've never trusted it as it's always ticked/rattled a little anyway..
Anyway my specs are
Phenom2 965 @ 3.4ghz
watercooled corsair H50 rad
2x2gb ddr2
XFX hd5870
GA-MA790FX-dq6 mobo
four case fans
etc

my question is, I have always liked Antec TruPower and THIS ONE (click) is the 650w modular PSU.

is 650w enough for my system?
i MAY crossfire with another 5870 but that is not in the near future, certainly not this year. but this is SLI-compatible anyway so it might manage.

but forget crossfire, is it plenty for my system as it is?
or have you got any other recommendations/
thanks!!

 

[Andrei23]

if you want to crossfire than I suggest you look at buying something 750w and up (quality ofc), if not then that 650w will be plenty

 

[claypigeon101]

cool thanks. the corsair PSU chooser said the same thing. but for what i've got now, the price is right. i probably wont get round to crossfiring anyway knowing me/
thanks!