newbie's first attempt at ram speed optimization (default is 2133 CL15-15-15-36 @ 1.2V). since this is an H270i i'm limited to 2400mhz and I was able to get it to CL12-14-14-28 @
Kingston HyperX Savage Black 8GB Kit (2x4GB) 2400MHz DDR4 CL12 RAM - Pangoly
The Witcher 3 RAM 2133MHz CL12 vs. 3000MHz CL16 - YouTube
2133MHz CL12 vs. 3000MHz CL16 (RAM Test in 10 Games) - YouTube