TEAMGROUP T-Force Dark Z FPS 16GB Kit (2x8GB) DDR4 Dram 4000MHz (PC4-32000) CL16 Desktop Memory Module Ram for Low Latency TDZFD416G4000HC16CDC01 at Amazon.com
Patriot Viper Elite II 32GB (2 x 16GB) DDR4 4000MHz CL20 Dual Channel RAM Memory £119.99 @ Amazon - hotukdeals
G.SKILL 16GB (2 x 8GB) TridentZ RGB Series DDR4 PC4-32000 4000MHz Desktop Memory Model F4-4000C17D-16GTZR at Amazon.com
G.SKILL 16GB (2 x 8GB) TridentZ Series DDR4 PC4-32000 4000MHz for Intel Z170 Platform Desktop Memory Model F4-4000C19D-16GTZ at Amazon.com
TEAMGROUP T-Force Dark Z FPS 16GB Kit (2x8GB) DDR4 Dram 4000MHz (PC4-32000) CL16 Desktop Memory Module Ram for Low Latency TDZFD416G4000HC16CDC01 at Amazon.com
TOUGHRAM RGB MemoryDDR4 4000MHz 16G (8G x 2)
HyperX Predator DDR4 RGB 16GB Kit of 2 (2 x 8GB) 4000MHz CL19 DIMM XMP RAM Memory with Infrared Sync Technology (HX440C19PB3AK2/16) at Amazon.com
TOUGHRAM RGB Memory DDR4 4000MHz 16GB (8GB x 2) White