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

NEMIX RAM

NEMIX RAM 64GB DDR4 2933MHz CL21 2Rx4 ECC RDIMM HPE P28217-B21 memory upgrade

SKU CH-76N6-2QVJV

64 GB DDR4 2933 MHz ECC registered RDIMM for HPE servers, CL21 1.2 V 288-pin 2Rx4 module

  • Total capacity64 GB
  • Rated speedDDR4 2933 (PC4 23400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL21
  • Buffer typeRegistered
  • Rated voltage1.2 V
  • 64 GB capacity expands server memory headroom
  • DDR4 2933 MHz speed supports high-throughput workloads
  • ECC registered design detects and corrects data errors
  • 20 V operation reduces power draw per module
  • 288-pin RDIMM form factor fits HPE P28217-B21 slots

HPE Server DDR4 2933MHz 64GB ECC RDIMM

This NEMIX RAM module delivers 64GB of DDR4 registered ECC memory rated at 2933MHz with CL21 latency. It is built for HPE server and workstation platforms that require the P28217-B21 part number. The 288-pin RDIMM form factor fits standard DDR4 server slots. Operates at 1.2V for typical enterprise power envelopes.

Sustained workload behaviour with 2Rx4 organisation

The dual-rank 2Rx4 configuration spreads memory access across two logical ranks, helping the memory controller maintain throughput during long-running compute or virtualisation tasks. Registered buffering reduces electrical load on the server memory bus, allowing stable operation when all DIMM slots are populated. ECC circuitry corrects single-bit errors without interrupting the workload.

Build quality and daily mounting implications

Major OEM chips from Samsung, Micron or Hynix are used without a heat spreader, relying on chassis airflow for cooling. The 288-pin RDIMM keying prevents accidental insertion into incompatible consumer slots. Single-module packaging simplifies upgrades when only one slot is available or when matching existing capacity in pairs.

How it compares

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

Price $400.99
Typical for this category: the median of 21,161 items is $397.99.
Total capacity 64 GB
Higher than about 60% of the 20,941 comparable items (median 32 GB).
Price per GB $6.27 per GB
Cheaper than about 63% of the 20,941 comparable items (median $8.19 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameNEMIX RAM
Product lineHPE Server/Workstation Compatible Series Memory
Model nameHPE DDR4 2933 MHz ECC RDIMM Registered Server Memory
Part numberMR23400-924K1
Total capacity64 GB
Product type288-Pin DDR4 RDIMM
Performance
Rated speedDDR4 2933 (PC4 23400)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL21
ECC supportYes
Buffer typeRegistered
Heat spreaderNo
Memory rank2Rx4
Power
Rated voltage1.2 V
Compatibility
Compatible systemsHPE
In the box
Included items64 GB (1 × 64 GB) DDR4 2933 MHz PC4-23400 2Rx4 1.2 V CL21 288-PIN ECC RDIMM Registered Server Memory

Questions about this item

How much heat does this 64GB 1.2V RDIMM generate when running 24/7?

The module operates at 1.2V standard DDR4 voltage with no heat spreader; typical registered DIMMs at this voltage run cool enough for standard server airflow.

What motherboard slot and firmware support are required to use this 288-pin ECC RDIMM?

A server motherboard with DDR4 RDIMM slots, registered-memory support in BIOS and ECC enabled is needed; the module is validated for HPE P28217-B21 compatible platforms.

Can this CL21 2Rx4 module share channels with existing 2Rx8 or 1Rx4 DDR4 RDIMMs?

Mixing ranks per channel is platform-dependent; HPE memory population rules for the target server dictate which rank combinations are allowed per channel.

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