My i7 8700k can't afford a 4000mhz RAM? : r/overclocking
Computer Memory Ram KingBank Hynix RGB DDR4 32GB(2x16GB) 4000MHz 1.35V CL19 for Desktop Computer Game Office 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