I am upgrading a PC to play games like Battlefield 4 on it. I have 4 GB of DDR2 ram. I have a Core 2 Duo CPU at 2.66 GHz with 4 MB of cache. I also have a 375 watt power supply. I need a graphics card that will allow me to play games like Battlefield 4. It needs to be a pci express x16. I have windows vista. It needs to be cheep and i can buy from Amazon or Ebay used to get it cheaper. Under 50 bucks would be awesome if that even reasonable. Thanks