Looking into building a Sandy Bridge system with an i7-2600K and Asus P8P67 Pro board. My main uses are video encoding, I don't play any PC games. How much DDR3 should I be looking at and what speeds do I need if I want to overclock? I'm definitely on a budget so I'm looking for a "best bang for buck" situation. Thanks guys!
I would look at a 2x4GB set for 8GB of RAM. Having 8GB of RAM will be very useful for your applications, along with the i7 2600k
If this is more on a professional level video editing build, I would still consider going with a X58 build with a Hex-Core CPU. In heavy thread usage applications, these processors are still better for 1) more cores / threads and 2) triple-channel memory.