[Pre Order - allow extra time] Patriot 16GB Viper Steel DDR4 2666 MHz SO-DIMM Memory Module 16GB Capacity, 2666 MHz Clock Speed, PC4-21300, 260-Pin SO-DIMM, 1.2V, 18-18-18-43 Timings, Non-ECC, Supports XMP 2.0 Profiles, Tested on Intel and AMD Platforms