Very Noob Question!!!

[Thunderbrain]

For a quad-core system is it better to use the 8 pins EATX12V connector or will the 4 pin one be enough? And please could somebody tell me the difference in use of each one?

I have this 3 motherboards in mind for the build

http://www.newegg.com/Product/Product.aspx?Item=N82E16813131188 (4 pin only)

http://www.newegg.com/Product/Product.aspx?Item=N82E16813131180 (4 pin only)

http://www.newegg.com/Product/Product.aspx?Item=N82E16813131182 (4/8 pin)


PS: I'm not thinking on doing any type of OC

Lots of thanks in advance!!