What should I upgrade?

I am looking to upgrade something in my system. It is about 6 months old and I want to get a Gtx 660 but i also noticed that my Ram wasnt the best so what should i do first?

Specs:

FX-8120 3.1ghz

XFX Radeon 7770 Ghz

1tb Drive 7200rpm

8gb RAM 1333mhz

700watt

Gigabyte GA-970A-UD3 Board

Personally I dont like running a system without at least one ssd so id get one of those either kingston or adata (I have both but like my 512gb adata sx900)

Yea that something i want to do in teh future but right now Im trying to increase my performance in-game

Vid card will give you the most difference but RAM is so cheap. If you are playing on a single screen get a HD7950 and 8gig of 1600mhz ram and laugh at the massive jump in gaming performance.

That is assuming you play games where the 7770ghz runs poorly. If you are playing really old games then I dunno...