Upgrading cards? Help.

[Slayher]

I've been running the nVIDIA GeForce GTX 660Ti and I think it's about time I retire this card.

I'm running 4K Resolution on my computer rig with this card installed right now.

I think I'm selling this card for ($150) and I was thinking of purchasing this ASUS STRIX-GTX960

 

I use my desktop at 4K and watch videos in 4K.
I game in 1920x1080 because the GTX 660Ti isn't powerful

 

Is it worth upgrading from the GTX 660Ti to the GTX 960? From benchmarks it seems better, but in all reality...

Is the GTX960 worth $75 (What I'm paying after selling my current card) Am I going to see a difference? Please let me know if it's worth it!

PS. The reason why I want the STRIX version of the GTX960 is because my whole build is ASUS/Corsair.

Here are my following specs: (I know, supagodly)

 

[Whorax]

At 4K? Hell no.

[wyattzx]

You'll need a GTX 980 if you want to do decent. (decent) 4K. Then at that price-point a 290x is just as good and $250 cheaper.

[Kherm]

You're gonna want Dual 970s, Single 980, or 1 or 2 290Xs

[EpIcPoNaGe]

I wouldn't upgrade as the gtx 960 isn't a significant enough upgrade from a 660 ti 

[Najuno]

Upgrading from a GTX660Ti to a GTX960 is like upgrading from something old and slow to something new and slow. And that won´t do you any good in 4K. Go get a GTX980 2way SLI or a R9 290X 2way CF. Or sit it out for now and grab one of the next highend cards, that could be released in the next few weeks.