Benchmarks: AIDA64
AIDA64's read, write and copy benchmarks measure the maximum available memory bandwidth and the latency test measures the typical delay when the CPU reads data from system memory.
In these synthetic tests, Kingston's high-speed 2,133MHz kit comes out comfortably ahead of the trio of 1,600MHz options. Lower latencies give the Crucial Ballistix and G.Skill Ripjaws-X a slight edge over Corsair's Vengeance, but there's little to separate the three 1,600MHz kits.