Do I need a PSU upgrade?

[vasilisvar]

Hello there, I'm thinking of buying a second 7870 GHz Edition to crossfire my system. My current rig is:

CPU: i5 3570K overclokced @4.0 GHz
GPU: Sapphire 7870 GHz Edition
RAM: 8GB Corsair XMS2
HDD: 3x500GB WD
PSU: Power & Cooling Silencer 610 EPS12V 610Watt

My question is do I need to upgrade my PSU in order to crossfire the 7870 or am I going to be ok with my current PSU?

Thanks in advance guys

 

[dottorrent]

You will need a good 750 watt PSU for crossfiring 2 HD 7870 GHz edition cards. This one will do -

XFX Black edition 750w 80+ Gold certified PSU - http://pcpartpicker.com/part/xfx-power-supply-p1750bbefx

 

[vasilisvar]

Thanks mate!

 

[dottorrent]

Happy to help.

 

[Dark Lord of Tech]

PCPartPicker part list / Price breakdown by merchant / Benchmarks

Power Supply: EVGA SuperNOVA 750W 80 PLUS Gold Certified ATX12V / EPS12V Power Supply ($89.99 @ Microcenter)
Total: $89.99
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2013-11-03 13:09 EST-0500)

 

[Vic 40]

PCPartPicker part list / Price breakdown by merchant / Benchmarks

I wonder why you do that,for only a difference of $6 you recommend a psu for which i find a review in which they aren't as positive as i would like to see against a psu for which i find another review in which they are very positive about the product.