So I'm planning to build a 1000$ gaming rig, and I do not want anything related to overclocking, I'm getting a i5 3550 and a amd 7850. So what kinda mobo should I get that most fit my needs? H77? H67? Or what? And how much power supply should I buy?
You will want a H77 mobo, might as well have the newest as H67 is somewhat old now.
If your planning to Crossfire dual 7850's, you will need a 750W power supply, if only single card, a 600W.
Look for Corsair and Seasonic PSU's, they are good brands. Make sure they are modular and have at least 80+ Bronze certification.