I've been so excited to finally build my own gaming PC and either today or tomorrow will finally be the day that I have everything all together! I'm a little nervous about plugging in the power supply to everything because I'm not so sure which goes where yet to be honest :o. But here's a list of my parts that I have for my build could you tell me how good it would do, with graphics wise?

XION Predator Mid Tower Gaming Case

OCZ ModXStream Pro 600W

Gigabyte Intel Z68 ATX DDR3 2133 LGA 1155 Motherboards GA-Z68X-UD3H-B3

Intel Core i3-2120 Processor 3.3 GHz 3MB Cache

Corsair Vengeance 8 GB DDR3 1600 MHz

XFX AMD Radeon HD 6870

250 GB HDD

Windows 7