I usually play games like Call of Duty, Battlefield, Grand Theft Auto, Minecraft ,etc. I want to be able to play games on at least 720p resolution and have no lag and I don't want to spend over $200 on a graphics card. $220 max. Any suggestions on which card to get? Also my PC only has a 300watt power supply so I need at least a 500watt to run a graphics card. Will an Antec EarthWatts EA750 750W power supply work with my PC? (I'm not the best with pc internals. This is my first time really installing and swapping out parts in a pc) And any suggestions on GPU's would be great.