 "Samsung - DDR4 8 GB DIMM 288-pin" " Samsung 288-pin M393A1G40DB0-CPB System Memory (RAM) CDW.com
"Samsung DDR4 is an optimized solution for highly virtualized environments, high-performance computing and networking.Achieving bandwidth speeds up to 3.2Gbps, Samsung DDR4 delivers higher performance at a higher speed than both DDR2 and DDR3. Compared to DDR3L (low power DDR3), Samsung DDR4 shows an overall improvement in performance in every DIMM and a performance that is more than 40 percent better at 1 DIMM per channel.A major decrease in voltage and the improved I/O power efficiency of DDR4 synchronous dynamic RAM (SDRAM) translates into significant cost savings. According to Samsung internal testing, DDR4 boasts a continuous working voltage of 1.2 V, a voltage that is 11 percent lower than the 1.35 V consumed by DDR3L. By adopting POD (Pseudo Open Drain) for data transmission, Samsung DDR4's input/output (I/O) power consumption is reduced by 50 percent compared to the previously-used SSTL (Stub Series Terminated Logic) of DDR3L. Overall, Samsung DDR4 shows a Performance/watt level more than 20 percent higher than DDR3L." 
 "HyperX FURY - DDR4 16 GB: 2 x 8 GB DIMM 288-pin" " HyperX 288-pin HX421C14FB2K2/16 System Memory (RAM) CDW.com
"HyperX FURY DDR3 memory delivers hassle-free, Plug-and-Play functionality that gets you in the game faster and instant performance that helps you win it. Its asymmetric, aggressive design lets you stand out from the crowd of "squared" designs and features quality aluminum and a diamond-cut finish." 