VerocityRequiem , as tom said in the review , it's not really an upgrade if you have a gtx660 and want to upgrade , but from your gtx560ti i think its a good idea 2 upgrade . I had the gtx660 and finished crysis3 and metro last light with medium and high settings 1920x1080 . Think that gtx760 is between gtx660 and gtx670 and u can find lots of offers out there, I say GO 4 it
This 4 gb model run bf4 at a GeforceExperience click to optimize settings at 59-73 fps max 87 low of 49 rarely, that's all ultimate that can be and high if not, AA is only set to 4xmsaa I have it running at 1080p, and broadcasting 3 monitors (but not as a single nor dupiicate but dynamic style desktops, I have ran bf4 on a 3 screen setup and its sick but I have a 24" dell, 22" led hdtv and a 20" dell which is only 1440 x 968 so it sets the resolution down in the 3256 x 980 I believe but it runs great if all 24 " or same reso I would run it), this card is outperforming my 7950 3gb by a lot and my 280x 2 gb is beat even worse, I had 2 msi twinfrozer hd7950's at one time and the benchmarks for them on extreme in 3dmark is 7680 this setup with i5 4690k asrock fatal1ty z97 killer edition, thermaltek water3.0Extreme cpu cooler and the corsair H60 for the gpu, 8 gb dual channel gskilll ripjaw 1600 set + Crucial Ballistic sports 16gb dc set + 24 gb ram, osz extreme 750w modular psu, im getting 7356 compared to the 6gb vram xfire setup with the msi hd 7950's so ITs really pushing it and that's with a precision x 16 preset oc. if you can get the 4 gb version go for it at $300-250 its worth it except the fact that the 970's are only 350 so ...
A little space would of helped with that block of text.
You don't have 6Gb of vram on those cards unless both are 6Gb cards, Sli and Xfire don't add the Vram they "share" so can only use the max Vram on a single card.
Glad your getting good performance with your card though