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Green rectangular circuit board with gold edge connectors and black memory chips, no heat spreader

NEMIX RAM

NEMIX RAM 64GB DDR5 4800 ECC RDIMM 2Rx4 CL40 1.1V 288-Pin HPE P50312-B21 memory upgrade

SKU CH-SV3F-A73DX

64 GB DDR5 ECC RDIMM running at 4800 MT/s with CL40 latency and 1.1 V operation for HPE servers

  • Total capacity64 GB
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 64 GB capacity expands server memory headroom
  • DDR5 4800 speed delivers high data throughput
  • ECC registered design protects data integrity
  • 1 V operation reduces power draw
  • 288-pin RDIMM fits HPE P50312-B21 slots

HPE-Compatible DDR5 ECC RDIMM

This 64GB registered DDR5 module is built for HPE servers and workstations that require ECC protection. It delivers 4800 MT/s bandwidth with CL40 latency and operates at 1.1V. The 2Rx4 organization and 288-pin form factor match the P50312-B21 specification for direct replacement.

Registered DDR5 interface limits

Registered DIMMs add a clock cycle of buffering that stabilises heavy loads but prevents use in unbuffered consumer platforms. The DDR5 4800 standard caps this module at PC5-38400 throughput, so systems wired for higher DDR5 speeds will down-clock to this rate. ECC functionality requires a motherboard that exposes the extra parity lane.

Single 64GB 2Rx4 module

One dual-rank 64GB stick fills a single slot, making it the right part when the board has limited DIMM positions or when the memory controller requires 2Rx4 density for full-channel population. Buyers needing lower-capacity sticks or unbuffered ECC should look elsewhere.

How it compares

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

Price $1,545.99
Pricier than about 65% of the 21,161 comparable items (median $397.99).
Total capacity 64 GB
Higher than about 60% of the 20,941 comparable items (median 32 GB).
Price per GB $24.16 per GB
Pricier than about 69% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameNEMIX RAM
Product lineHPE Server/Workstation Compatible Series Memory
Model nameHPE DDR5 4800 MHz ECC RDIMM Registered Server Memory
Part numberMR38400-924K1
Total capacity64 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 rank2Rx4
Power
Rated voltage1.1 V
Compatibility
Compatible systemsHPE
In the box
Included items64 GB (1 × 64 GB) DDR5 4800 MHz PC5-38400 2Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory

Questions about this item

Is this a single 64GB module or a kit of multiple sticks?

It is a single 64GB module, so you add capacity in 64GB increments per slot.

What does the 4800 speed rating mean for actual throughput in a server?

The module runs at DDR5 4800 with CL40 timing; actual throughput depends on the memory controller and channel population.

Does the 288-pin RDIMM interface limit the maximum speed I can reach?

The 288-pin DDR5 RDIMM form factor is built for the 4800 spec; the platform's memory controller determines the final operating speed.

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