Ram compatibility with EVGA x58

[EWS1986]

I have an EVGA x58 mobo and i7 920 with 6gb of corsair 1333 memory and was looking to find out compatibility and best recommendation to upgrade to anywhere between 12 and 16gb or memory?

 

[Tradesman1]

I'd 3x4GB GSkill Snipers in 1600/9

http://www.newegg.com/Product/Product.aspx?Item=N82E16820231464

or at 1333 their Ripjaws

http://www.newegg.com/Product/Product.aspx?Item=N82E16820231405