NEMIX RAM DDR5 4800 ECC Registered RDIMM 64GB 2x32GB CL40 1.1V 1Rx4 ASRock Rack SIENAD10HM3 memory upgrade

Server-grade DDR5 ECC RDIMM kit

This 64GB kit comprises two 32GB DDR5-4800 Registered ECC modules built to the PC5-38400 standard. Each stick runs at 1.1V with CL40 latency and a 1Rx4 organisation, delivering the exact electrical profile the ASRock Rack SIENAD10HM3 motherboard expects. The registered architecture buffers address and command signals so every slot can be populated without stressing the memory controller.

Verified fit for ASRock Rack SIENAD10HM3

The 288-pin RDIMM form factor matches the board's physical and electrical requirements, avoiding the incompatibility of unbuffered UDIMM or SODIMM alternatives. Population rules for this platform are strict; the kit is validated against the vendor's qualified-vendor list so the system recognises the full capacity at rated speed on first boot. Buyers whose servers demand a different DIMM type or voltage should look elsewhere.

64GB registered ECC capacity with DDR5-4800 headroom

Two ranks per channel provide ample space for virtualisation hosts, database buffers and large-scale container workloads while ECC corrects single-bit errors before they corrupt data. The DDR5-4800 data rate sustains high-throughput memory-bound tasks, yet the fixed CL40 timing and 1.1V operation set a ceiling for latency-sensitive codes that would benefit from lower-latency or higher-frequency modules not supported by this platform.