Hey guys this is my first post and im new to this site so please be nice. I currently have an Alienware x51 R2 from 2013. Don't hate me.. I wish I had built my pc but i was much less mature and didn't know what i was doing. My pc specs at the moment: Intel Core i5 4430, GeForce GTX 645, 8GB Ram, Win 8.1, 1920x1080 res. So I'm looking to get a new graphics card to help me run games like GTA V, Arma 3, Battlefield, CoD, and some more GPU intensive games. I would be willing to spend around $200 on this upgrade. The main problem is that i may need a new case depending on what card i get. My case right now only supports the upgrade to a 750 ti by EVGA since its such a small card. So I am looking for a recommendation on BOTH a CASE and a GRAPHICS CARD. Thanks to any who reply. I hope it helps.