Brute Networks 4X71M22551 128GB DDR5 4800 4Rx4 ECC Registered RDIMM server RAM

Server memory for Lenovo systems

Brute Networks 4X71M22551 is a 128GB DDR5 module built to match Lenovo part number 4X71M22551. It targets administrators who need high-capacity registered ECC memory for compatible Lenovo servers. The module runs at 4800 MT/s with a PC5-38400 rating.

Registered ECC build with major-brand chips

The 4Rx4 registered design adds a buffer that reduces electrical load on the memory controller, allowing dense population in multi-socket servers. Major-brand chipsets are used throughout, and the module is 100 percent Lenovo compatible to preserve factory warranty coverage. Identically matched modules ship together for consistent performance across all slots.

DDR5-4800 speed ceiling and registered latency

The DDR5-4800 interface caps peak bandwidth at the PC5-38400 level, so workloads that scale beyond this throughput will hit a hard limit. Registered operation adds one cycle of latency versus unbuffered modules, which affects latency-sensitive code paths. The 4Rx4 organisation also restricts maximum rank-per-channel counts on some platforms.