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Eight green DDR5 RDIMM modules with black chips and gold contacts in a clear plastic tray

NEMIX RAM

NEMIX RAM RS720A-E12-RS12 256GB (8x32GB) DDR5 4800 CL40 ECC RDIMM memory upgrade

SKU CH-BHEK-XHNGB MPN RS720A-E12-RS12

Eight 32 GB DDR5 registered ECC modules at 4800 MT/s CL40 1.10 V for 256 GB total capacity

  • Capacity256GB (8 x 32GB)
  • SpeedDDR5 4800 (PC5 38400)
  • ECCYes
  • Buffered/RegisteredRegistered
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • Voltage1.10V
  • 256GB kit expands server capacity with eight 32GB modules
  • DDR5 4800 speed delivers high bandwidth for demanding workloads
  • ECC registered design protects data integrity in mission-critical systems
  • 1V operation reduces power draw per module
  • Validated for ASUS RS720A-E12-RS12 dual-processor server

Purpose-built kit

This 256GB kit contains eight 32GB DDR5 4800 CL40 registered ECC RDIMMs built for the ASUS RS720A-E12-RS12 2U dual-processor server. The modules run at 1.1V and use a 1Rx4 layout with major OEM DRAM chips. They are validated for that specific platform and ship new.

Fit and limits

IT teams populating the full eight-slot capacity of an RS720A-E12-RS12 will find this kit matches the board’s registered ECC requirement. Builders using consumer motherboards, workstations that need unbuffered DIMMs, or servers that demand a different speed grade or rank configuration should look elsewhere.

Deciding spec

The registered ECC RDIMM form factor is the single specification that determines whether this kit fits the target server; only platforms designed for registered DDR5 ECC modules can use it.

Highlights

  • 256GB kit expands server capacity with eight 32GB modules
  • DDR5 4800 speed delivers high bandwidth for demanding workloads
  • ECC registered design protects data integrity in mission-critical systems
  • 1V operation reduces power draw per module
  • Validated for ASUS RS720A-E12-RS12 dual-processor server

Specifications

BrandNEMIX RAM
SeriesASUS Server Motherboard Compatible Series Memory
ModelASUS DDR5 4800MHZ ECC RDIMM Registered Server Memory
Part NumberMR38400-314K8
Capacity256GB (8 x 32GB)
SpeedDDR5 4800 (PC5 38400)
ECCYes
Buffered/RegisteredRegistered
ChipsetMajor OEM Samsung, Micron, Hynix
Voltage1.10V
Compatible SystemASUS
CAS LatencyCL40
Heat SpreaderNo
Type288-Pin DDR5 RDIMM
Rank1Rx4
FeaturesDDR5 ECC Registered RDIMM Server Motherboard Compatible
Package Content256GB (8X32GB) DDR5 4800MHZ PC5-38400 1Rx4 1.1V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

What limits sustained throughput on the 4800 MT/s DDR5 kit during continuous load?

The 1Rx4 rank organisation and CL40 latency set the bandwidth ceiling; registered ECC buffering adds one cycle per command, so sustained throughput is governed by the DDR5-4800 data rate rather than thermal throttling.

How much heat and noise do the 1.10 V modules add when the server runs all day?

Modules run at 1.10 V with no heat spreaders, so they add minimal thermal load and zero acoustic noise; system fans dominate both temperature and sound inside the ASUS RS720A-E12-RS12 chassis.

Which motherboard and CPU combination must already be present for this 256 GB kit to function?

The kit is validated for the ASUS RS720A-E12-RS12 dual-processor server motherboard; compatible DDR5-4800 registered ECC support in the installed CPUs is required for the 8×32 GB modules to initialise.

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