Do I need a new PSU?

[RadRam]

I got my 650 W Bronze 80+ Corsair PSU back in 2011.

I'm looking to buy a used gpu of a friend, to sli it. We both ahve 770's.

Calculators say I need 500 or so watts for my whole system.

Would my PSU power this 4 years later?

 

[Rhezner]

if it is a cx series then i would recommend getting a new one as the cx series is pretty bad.

 

[gskill support]

Depends on the exact model or the PSU and it's 80 PLUS rating. Max Wattage actually doesn't mean much.

 

[RadRam]

if it is a cx series then i would recommend getting a new one as the cx series is pretty bad.

This is it: http://www.amazon.co.uk/gp/product/B004O0P9TO?psc=1&redirect=true&ref_=oh_aui_search_detailpage

 

[MasterMace]

It does not have enough connectors for GTX 770 2-way SLI . You will need a new PSU.

 

[RadRam]

It does not have enough connectors for GTX 770 2-way SLI . You will need a new PSU.

You're right, I could work around it, but I'd rather get a new one.