Build a PC with Dual or Quad CPU

Hey guys I'm looking to build a new PC, with dual or Quad Cpus installed. I was looking between AMD and Intel. Intel seems a bit more expensive for my budget. So I'm looking at some AMD Mobo's and AMD processors this is what I've come up with. 

http://www.supermicro.com/Aplus/motherboard/Opteron6000/SR56x0/H8QG6-F.cfm

http://www.newegg.com/Product/Product.aspx?Item=N82E16819113036

Now what I'm wondering about that I've been doing plenty of research on it but i have yet to find any hard information on how efficent, how fast, and how well these amd base computers that run multiple cpus. If you guys have any information you would like to share please give me some insight. 

Do you guys suggest I just go with Intel for this project or should i take a gamble with AMD? Idk please educate me this is my first time attempting to do a project like this! Thanks! I'm probably going to use this computer for Visual Effects and a Render Box

Opterons are nice for servers and Xeons aswell it depends what kind of horse power you need and the budget that you have