8CL 2133mhz RAM

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I wouldn't do 4 x 4 GB

2 x 8GB is much easier to manage with less load on ya memory controller and better overclocking

These are CAS 9 but a lil more than half the price and w/ Hynix modules in them, better timings are certainly possible

http://www.newegg.com/Product/Product.aspx?Item=N82E16820226420

The 2133 CAS 9 won THGs THG Elite Hardware Award
http://www.tomshardware.com/reviews/memory-scaling-gaming-haswell-richland,3593-18.html

The extra speed will serve well tho not in every instance, as you can see here, 2400 RAM is 11% faster on F1 than 1600. The STALKER series is another set of games that benefits from faster RAM.

http://www.tomshardware.com/reviews/32-gb-ddr3-ram,3790-10.html

I think you will find that those 2133...
I wouldn't do 4 x 4 GB

2 x 8GB is much easier to manage with less load on ya memory controller and better overclocking

These are CAS 9 but a lil more than half the price and w/ Hynix modules in them, better timings are certainly possible

http://www.newegg.com/Product/Product.aspx?Item=N82E16820226420

The 2133 CAS 9 won THGs THG Elite Hardware Award
http://www.tomshardware.com/reviews/memory-scaling-gaming-haswell-richland,3593-18.html

The extra speed will serve well tho not in every instance, as you can see here, 2400 RAM is 11% faster on F1 than 1600. The STALKER series is another set of games that benefits from faster RAM.

http://www.tomshardware.com/reviews/32-gb-ddr3-ram,3790-10.html

I think you will find that those 2133 CAS 9's are cheaper than any 1866 or 1600 CAS 9 sets you would buy
 
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