First gaming computer.

[Colten69]

OK so I'm looking to buying my first gaming PC. I have a budget of 800 and I would like it to have a keyboard and mouse and maybe a screen if possible.I know 800 is not alot but I'm not looking to run games on ultra by no means but a decent setting that's playable and enjoyable.

 

[kingjc100]

And you're looking to buy one, not build one correct?
If so the best range you'll probably find are desktops with GTX 760, R9 270 coupled with an i5 4570 or 4670 and 8gb of RAM.
http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=8433453&csid=_61
This one is 850 after rebate. The CPU isn't the best, but the GTX 760 is a good card.
http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=8529719&CatId=1886
this looks to be about the same but without liquid cooling.

There are others if you look out there (ASUS ROG, Origin, Alienware) are generally overpriced, especially Alienware and Origin, so I would stay away from them if you want the best price/performance, although from my experience, ASUS ROG branded GPUs, and Motherboards have some of the best build quality i've used, so i'd expect their Desktops to have similar build quality.

As for prebuilts stuff like that is possibly the best you'll get with up-to-date parts (IE not using previous generation CPUs or GPUs) If you don't mind going for older parts that are performance wise similar-slightly less you could end up spending less. But should you do the research and build your own (it's not really all that hard) you could get a better computer for the same price, or the same for considerably less and be able to customize it more to your liking.