Lutfij :
Actually, if you're not finicky about the details in game, then with reduced details and/or reduced resolutions you can get by through a lot more. Before you consider an upgrade path, we will need to know if your processor and ram will bottleneck your upgrade and if your PSU can handle the drop in card. Essentially, passing on your full system's specs would do you good to reveal a better picture. Don't forget to mention the resolution you're currently playing at.
Thanks for the responses!
I tend to play games borderless at 1920x1080. The rest of my specs are:
Motherboard - Alienware 0PGRP5
Graphics Card - NVIDIA GeForce GTX 660
CPU - Intel Core i7 4770 @ 3.40GHz
RAM - 8.00GB Dual-Channel DDR3 @ 799MHz
I hope that's all the specs you need.
P.S Main reason I was planning on upgrading was for Dark Souls 3, but I have it on console so it doesn't bother me too much. Also, my old pc could only run games on min, so that's probably why i'm not overly picky.