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Two green DDR5 RDIMM modules with black chips, no heat spreaders

NEMIX RAM

NEMIX RAM RS520A-E12-RS24U 256GB (2x128GB) DDR5 4800 CL40 ECC RDIMM memory upgrade

SKU CH-HPNA-8Q1Q6 MPN RS520A-E12-RS24U

A 256 GB kit of two 128 GB DDR5 4800 CL40 ECC registered DIMMs for the ASUS RS520A-E12-RS24U server

  • Total capacity256 GB (2 × 128 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 256GB total capacity with two 128GB modules
  • DDR5 4800 speed rated at PC5-38400 bandwidth
  • ECC registered RDIMM for server data integrity
  • CL40 latency at 1.1V operating voltage
  • 288-pin 4Rx4 configuration for ASUS RS520A-E12-RS24U

Product identity

This is a 256GB DDR5 memory kit built for the ASUS RS520A-E12-RS24U 2U server. It contains two 128GB registered ECC RDIMMs rated at 4800 MT/s with CL40 latency and 1.1V operation. The modules use 4Rx4 organisation and 288-pin DDR5 form factor.

Suitable builds and limits

The kit suits administrators expanding that specific ASUS single-socket 2U platform with high-capacity registered ECC memory. Buyers needing non-ECC unbuffered DIMMs, different speeds, lower capacities or compatibility with other server models should look elsewhere.

Deciding specification

The registered ECC RDIMM design with 4Rx4 layout and DDR5 4800 rating is the single specification that determines whether this kit will function in the target ASUS server.

How it compares

Measured against everything we stock in Model-Specific Memory Upgrades, at today’s prices. Recalculated every night.

Price $8,449.99
Pricier than about 85% of the 21,161 comparable items (median $397.99).
Total capacity 256 GB (2 × 128 GB)
Higher than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $33.01 per GB
Pricier than about 90% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameNEMIX RAM
Product lineASUS Server Motherboard Compatible Series Memory
Model nameASUS DDR5 4800 MHz ECC RDIMM Registered Server Memory
Part numberMR38400-744K2
Total capacity256 GB (2 × 128 GB)
Product type288-Pin DDR5 RDIMM
Performance
Rated speedDDR5 4800 (PC5 38400)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL40
ECC supportYes
Buffer typeRegistered
Heat spreaderNo
Memory rank4Rx4
Power
Rated voltage1.1 V
Compatibility
Compatible systemsASUS
In the box
Included items256 GB (2 × 128 GB) DDR5 4800 MHz PC5-38400 4Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

Should I choose the 256 GB kit or a smaller capacity for my ASUS RS520A-E12-RS24U server?

The kit supplies 256 GB as two 128 GB modules, filling two DIMM slots with 4Rx4 registered ECC DDR5 4800 memory; select this capacity when your workload needs the maximum supported density per channel.

What does the DDR5 4800 rating deliver once the modules are installed in the RS520A-E12-RS24U?

The modules run at 4800 MT/s with CL40 latency at 1.10 V, providing PC5-38400 bandwidth for registered ECC workloads on the compatible ASUS server platform.

How does the 288-pin DDR5 RDIMM interface limit performance in this server?

The 288-pin registered DDR5 form factor operates at 4800 MT/s with ECC and 4Rx4 organisation, capping throughput to the PC5-38400 standard supported by the ASUS RS520A-E12-RS24U memory controller.

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