CORSAIR VENGEANCE PRO 16 GB (2PK x 8GB) 4000MHz DDR4 C18 DIMM Desktop Memory with RGB lighting Black CMW16GX4M2Z4000C18 - Best Buy
I have 4000MHz ram in 4 slots but in UEFI BIOS it's showing 2133MHz under DRAM STATUS and while checking in task manager under performance tab, I see 4000MHz. : r/pcmasterrace