Reddit mentions of Gigabyte AMD R7 360 128 Bit GDDR5 2GB 2xDVI/HDMI/DP Overclocked Graphics Card (GV-R736OC-2GD REV2.0)

Hey OP, as you are probably aware by now, the GPU you have is a dudd, but hopefully you only paid around $40 for so it should only be a small loss

Obviously you are on a budget and will have to wait, but when you can afford it, linked lowest level cards you should ever consider buying

If you want to keep it on the cheap side, you can go as low as $100 and get something that is comparable to an XB1/PS4

Nvidia GTX 750ti - Review

AMD R7 360 - Review

Linus Tech Tips Explains cheap GPUs Link

No, the gpu is definetly what's "killing it". 4gbs of ram is too little nowadays but it's not your problem right now for sure (though a $30 stick of ram will help you with the other stuff you do like multitasking, hd video reproduction with multiple windows open on chrome, etc.).

Just to give you some sort of comparison between your gpu and more modern ones: (650ti vs:)

• (starting with nvidia's gpus) gtx 750ti --- 40-60% faster, costs $110, has 2gb of vram.
  
  
• gtx 950 --- almost x2 faster, costs $120-$140, comes with 2gb of vram too.
  
  
• gtx 960 --- about x2.2 faster, costs $200, also 2gb of vram
  
  
• gtx 970/980/1070/1080 are all of course much much faster, but im assuming you dont play on 4k anyways so they may be overkill.
  
  
• (AMD's gpus now) r7 260/360 --- a little bit faster than your card, around 30% and 50% and both cost anything between $100 and $140 (like this 360 at $100)
  
  
• r9 380/380x --- about as fast as the 960 (the 380x is maybe a tad bit faster) and definetly faster than the 950, so about x2 and x2.2 as fast. They cost $200 and $230 but now their prices are definetly going down because.....
  
  
• rx 480 --- basically x3 your card, since it apparently matches up with the 980, it will cost 200$ at 4gb of vram and $230 if you want it to have 8gb of vram.
  
  What i'm saying is that you can spend $30 on a 4gb stick of ram, get 1-5 fps boost and a significant boost in your overall windows/macos/linux experience, or get a rx 480/gtx 950 for 200(my recomendation) or 150 dollars and get a significant boost, probably getting to playable levels at medium in 1080p with the 950 and most definetly full 60fps at max settings on 1080p with the new rx 480. You can also do both and probably be done with upgrading your pc for a long while, maybe 3 years or more even.
  
  Also, the 750ti, 950, 960 and 480 all need very little power compared to other cards, so you can probably just swap them with your current 650 without much hassle. I would ask /r/buildapc for more info on compatibility.
  
  

Looks like you'll be limited to single slot cards, if you have the wider case.
http://en.community.dell.com/support-forums/desktop/f/3515/t/19580048
You're going to be severely limited by your CPU for any modern games.

With your budget honestly you'd be better off getting a new Dell. The newer Dell towers are great for dropping in the low powered card like the R7 360 or GTX 750 Ti. You could even pick up an i5 Optiplex from craigslist so you don't have to pay shipping from ebay. Make sure you get the wider tower, not a slim one.

• $120 Dell Optiplex 3020
  
  
• $89.99 AMD R7 360

https://www.amazon.com/Gigabyte-Overclocked-Graphics-GV-R736OC-2GD-REV2-0/dp/B01DT48WSU/ref=sr_1_1?ie=UTF8&qid=1465962585&sr=8-1&keywords=r7+360

VERSUS



https://www.amazon.com/ZOTAC-NVIDIA-GeForce-GDDR5-ZT-70603-10M/dp/B00JB1XHYA/ref=sr_1_5?s=pc&ie=UTF8&qid=1465962105&sr=1-5&keywords=750



which one for 300 watts