Patriot Viper Elite II DDR4 32GB(2 x 16GB) 4000MHz Kit at Amazon.com
KLEVV Bolt XR 16GB kit (8GB x 2) 4000MHz Gaming Memory DDR4-RAM XMP 2.0 Non-RGB Extreme Performance Overclocking at Amazon.com
Crucial Ballistix MAX RGB 4000 MHz DDR4 DRAM Desktop Gaming Memory Kit 16GB (8GBx2) CL18 BLM2K8G40C18U4BL (Black) at Amazon.com
TEAMGROUP T-Force Vulcan Z DDR4 32GB Kit (2x16GB) 4000MHz (PC4-32000) CL18 Desktop Memory Module Ram TLZRD432G4000HC18LDC01 red at Amazon.com
G.Skill Trident Z NEO Series 32GB (2 x 16GB) 288-Pin SDRAM DDR4 4000 (PC4-32000) CL18-22-22-42 1.40V Dual Channel Desktop Memory Model F4-4000C18D-32GTZN at Amazon.com
Kingston Fury Renegade 32 GB (2 x 16 GB) 4000 MHz DDR4 CL19 Desktop Memory Kit of 2 KF440C19RB1K2/32 at Amazon.com
Corsair Vengeance LPX 64GB (4x16GB) DDR4 4000MHz C18 Desktop Memory (High Performance Overclocking, Pure Aluminum Heatspreader, Custom Performance PCB) Black at Amazon.com
Amazon.com: Thermaltake TOUGHRAM XG RGB DDR4 4000MHz 64GB (32GB x 2) 16.8 Million Color RGB Alexa/Razer Chroma/5V Motherboard Syncable RGB Memory R016R432GX2-4000C19A : Everything Else
G.Skill RipJaws V Series 16GB (2 x 8GB) 288-Pin SDRAM (PC4-32000) DDR4 4000 CL18-22-22-42 1.35V Dual Channel Desktop Memory Model F4-4000C18D-16GVK at Amazon.com
G.Skill Trident Z RGB Series 32GB (2 x 16GB) 288-Pin SDRAM DDR4 4000 (PC4-32000) CL18-22-22-42 1.40V Dual Channel Desktop Memory Model F4-4000C18D-32GTZR at Amazon.com