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Eight green DDR5 RDIMM sticks in a row

NEMIX RAM

NEMIX RAM RS520A-E12-RS24U 256GB (8x32GB) DDR5 4800 CL40 ECC RDIMM memory upgrade

SKU CH-X966-0W87F MPN RS520A-E12-RS24U

256GB DDR5 4800 ECC RDIMM kit with eight 32GB modules at CL40 for ASUS RS520A-E12-RS24U servers

  • Total capacity256 GB (8 × 32 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 256GB total capacity across eight 32GB modules
  • DDR5 4800 speed with PC5-38400 bandwidth
  • ECC registered RDIMM for server data integrity
  • 1V operation reduces power consumption
  • 288-pin 1Rx4 design fits ASUS RS520A-E12-RS24U

Compatible DDR5 ECC RDIMM kit

This 256GB kit contains eight 32GB DDR5 4800 registered DIMMs built for the ASUS RS520A-E12-RS24U server. Each module runs at 1.1V with CL40 latency and uses a 1Rx4 organisation. The memory is validated for that specific platform.

IT buyers needing registered ECC memory

Administrators expanding the named ASUS 2U server will find the exact capacity and speed the system expects. Workstations or consumer boards that require unbuffered non-ECC DDR5 cannot use these registered modules.

288-pin DDR5 RDIMM form factor

Only motherboards with DDR5 RDIMM slots accepting 1Rx4 registered modules at 4800 MT/s can install this kit. Boards limited to UDIMM, SO-DIMM or lower speeds will not accept it.

How it compares

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

Price $7,102.99
Pricier than about 83% of the 21,161 comparable items (median $397.99).
Total capacity 256 GB (8 × 32 GB)
Higher than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $27.75 per GB
Pricier than about 78% 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 numberMR38400-314K8
Total capacity256 GB (8 × 32 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 rank1Rx4
Power
Rated voltage1.1 V
Compatibility
Compatible systemsASUS
In the box
Included items256 GB (8 × 32 GB) DDR5 4800 MHz PC5-38400 1Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

Will the 288-pin DDR5 RDIMM modules fit the ASUS RS520A-E12-RS24U 2U server chassis?

Yes. The kit is built for the ASUS RS520A-E12-RS24U single-socket 2U server and uses the standard 288-pin DDR5 RDIMM form factor that the motherboard slots accept.

What is the correct installation sequence for the eight 32 GB 1Rx4 modules to avoid a boot failure?

Populate all eight slots following the motherboard manual's channel order; the common mistake is leaving a channel half-filled, which prevents the registered ECC memory from training at 4800 MT/s.

When should the registered ECC RDIMMs be replaced in a 24/7 mission-critical workload?

Replace modules only if ECC correctable-error counters rise sharply or the system logs uncorrectable errors; otherwise the 1.10 V DDR5 4800 CL40 sticks are rated for continuous server duty.

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