G.Skill Trident Z RGB F4-4000C18D-64GTZR memory module 64 GB 2 x 32 GB DDR4 4000 MHz

Memory clock speed: 4000 MHz | Memory voltage: 1.4 V | Component for: PC/Server | Memory channels: Dual-channel | Internal memory: 64 GB | ECC: No | Memory layout (modules x size): 2 x 32 GB | Internal memory type: DDR4 | Buffered memory type: Unregistered (unbuffered) | Intel Extreme Memory Profile (XMP): Yes | CAS latency: 18 | Harmonized System (HS) code: 84733020 | Intel Extreme Memory Profile (XMP) version: 2.0