If you want to save some money I would look at maybe buying this video card
Sapphire Radeon HD 7850 OC 920MHZ 2GB 4.8GBPS GDDR5 DVI HDMI DVI-I/DVI-D/HDMI/DP PCI-E Video Card
It will have a few less FPS then the 7870 but still will play games fine with 1080p res