pulled from a working Dell Poweredge server 64 GB of memory total, this is TWO Samsung 32GB DDR4 2133 MHz PC4-17000R RDIMM Server Memory RAM (M393A4K40BB0-CPB). These are high-quality memory modules specifically designed for server use. With a capacity of 32GB each and ECC Registered features, this RAM provides reliable performance and error correction for critical systems. Manufactured by Samsung and backed by a lifetime warranty, this DDR4 SDRAM module is compatible with servers and operates at a frequency of 2133MHz. It is a single unit packaged in an anti-static faraday bag, making it a secure and dependable choice for enhancing server performance and capacity. we're running in a dell Power edge r530