What games can it run does it game good?

Im going to be adding my own graphics card


Here are The Specs

Intel Core i7-3770K Ivy Bridge 3.5GHz (3.9GHz Turbo) LGA 1155 77W Quad-Core Desktop Processor Intel HD Graphics 4000

Microsoft Windows 7 Home Premium Full Version CD - 64 bit

16 GB 1333Mhz DDR3 Memory

2.0TB Hard Drive 7200rRPM


Nvidia Geforce 550 GTX TI 1GB GDDR5 Video

10/100/1000 Network LAN

6-channel 3D Premium Surround Sound

Logitech USB Keyboard

Logitech USB Optical Mouse w/wheel

Audio Port (Line-in, Line-out, Mic-in)