Thermaltake TOUGHRAM XG RGB White DDR4 4000MHz 64GB C19 (32GB x 2) 16.8 Million Color RGB Alexa/Razer Chroma/5V Motherboard Syncable RGB Memory RG06R432GX2-4000C19B at Amazon.com
CORSAIR VENGEANCE RGB PRO 16GB (2x8GB) DDR4 4000MHz C19 LED Desktop Memory - Black at Amazon.com
MSI MEG Z490 ACE LGA 1200 Motherboard Intel Z490 DDR4 4000MHz RAM PCI-E 4.0 SATA III M.2 USB3.2 Gen2 Type-A Type-C Bluetooth 5.1 - AliExpress
G.Skill Trident Z RGB 32GB (2 x 16GB) DDR4-4000 PC4-32000 CL18 Dual Channel Desktop Memory Kit F4-4000C18D-32GTZR - Black - Micro Center
GIGABYTE X570 GAMING X (Socket AM4) USB 3.2 Gen 1 AMD Motherboard X570 GAMING X - Best Buy
4000 Mhz RAM issues and timing : r/overclocking
AMD Ryzen 7 3700X R7 3700X CPU + MSI X470 GAMING PLUS MAX Motherboard Set meal Socket AM4 New / no fan - AliExpress
MSI MEG Z490 ACE LGA 1200 Motherboard Intel Z490 DDR4 4000MHz RAM PCI-E 4.0 SATA III M.2 USB3.2 Gen2 Type-A Type-C Bluetooth 5.1 - AliExpress