I have four new 8GB DDR4 2133 RAM chips with black aluminum low-profile heat-spreaders. These chips are clocked at 2133 Mhz @ 1.2V. From the factory, they run at 2133 Mhz with 13-15-15-28 timings at 1.2V I have 8 of these in total, and am currently running 4 of them with a stable overclock at 3200 Mhz with 16-16-16-38 timings at 1.35V. These are the bottom 4 DIMMS in the picture @ $70 each. Retail on Amazon is $94.99 + taxes & shipping.