Which RAM should I buy?

[Jeff93]

The price difference is negligible, just want to know which one is the best choice. The 1866 RAM has a lower CAS latency, but the DDR3 2133 RAM has a faster clock speed...which is better and why?

PCPartPicker part list / Price breakdown by merchant

Memory: G.Skill Sniper Series 16GB (2 x 8GB) DDR3-1866 Memory ($64.99 @ Newegg)
Memory: G.Skill Ripjaws X Series 16GB (2 x 8GB) DDR3-2133 Memory ($66.98 @ NCIX US)
Total: $131.97
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-11-29 14:28 EST-0500

This is for a gaming/video editing rig.

 

[BadActor]

I don't think you would be able to tell any difference real world between the two. The higher speed is off set by the increased latency. You might even be able to overclock the slower RAM to the same specs. I would get whatever is cheaper or you like the looks of better.

 

[utroz]

What cpu are you going to be using them with? They will have just about the same real world performance in most systems (Amd APU's excluded). I would get whatever matched the colors of my system.. It is really just about a coin toss between the two.

 

[Tradesman1]

Purely on DRAM the 1866 Snipers are the better set, they should easily OC to 2133/10 which is better than the 2133/11 RJ X set As mentioned, what CPU, will want a CPU than can carry 2133, not all can