Patriot Viper Elite II DDR4 16GB(1 x 16GB) 4000MHz Single Memory Module at Amazon.com
XLR8 Gaming EPIC-X RGB™ 4000MHz Desktop Memory
XLR8 Gaming EPIC-X RGB™ 4000MHz Desktop Memory
CORSAIR VENGEANCE RGB PRO 16GB (2x8GB) DDR4 4000MHz C19 LED Desktop Memory - Black at Amazon.com
Thermaltake TOUGHRAM RGB White DDR4 4000MHz 16GB (8GB x 2) 16.8 Million Color RGB Alexa/Razer Chroma/5V Motherboard Syncable RGB Memory R022D408GX2-4000C19A at Amazon.com