The Hynix 4GB (4X1GB) 2Rx8 PC2-5300F ECC Server Memory RAM HYMP512F72CP8N3-Y5 is a high-quality memory module designed for servers. With a total capacity of 4GB spread across 4 modules, each with a capacity of 1GB, this ECC RAM offers reliable performance for demanding computing tasks. The DIMM form factor and DDR2-667 bus speed ensure compatibility with a wide range of server systems, making it an ideal choice for businesses and organizations looking to enhance their server capabilities.