GPU Upgrade Recommendations? For a Noobie

[kennymonsta2]

Hello, I am a pretty competitive gamer but my Alienware X51 R2 computer is really holding me back from having great fun and dominating in game. I'm currently running with a intel i7-4770 3.4Ghz CPU, I have 8 gigs of ram, and a Nvidia GTX 745 GPU. I've been told numerous times to upgrade my graphics card but I have no idea what will work for my computer. All I am looking for is to be able to play first person shooter frames without having 18 FPS on lowest graphic settings.
Also I have a 240 watt external power supply.

I would appreciate so freaking much if someone could advise me to a decent affordable graphics card. I am not looking for 100 FPS on max settings just to run a game smoothly on normal settings.

Thank you!

 

[vapour]

With that 240 W proprietary PSU, you will not get any upgrades done. Can you fit a regular normal PSU in your PC? If not, you may need to get a new case and transfer everything, get a new PSU and GTX 1060 for 1080p gaming or 1070 for 2k+ gaming.