Hello, I'm building a computer soon (First time build) and I'm getting a MSI Z77A-GD65 LGA 1155 Motherboard with a Onboard Video Card, I'm also getting a EVGA GeForce GTX 670 FTW 2GB. So my question is, will I have to Disable the Onboard Video Card to use my GTX 670? If so, how do I do that. I really appreciate it the help!