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Green DDR5 RDIMM module with black chips, no heat spreader, 288 pins

NEMIX RAM

NEMIX RAM 128GB DDR5 4800 ECC RDIMM 4Rx4 CL40 1.1V HPE Compatible memory upgrade

SKU CH-2R0S-G1HXD

A 128GB DDR5 4800 ECC RDIMM with CL40 latency, 1.1V operation and 4Rx4 organisation for HPE servers

  • Total capacity128 GB
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 128 GB capacity handles heavy server workloads
  • DDR5 4800 MT/s speed delivers high data throughput
  • ECC registered design protects data integrity
  • 1 V operation reduces power consumption
  • Compatible with HPE P43334-K21 systems

HPE Server Memory Upgrade

This 128GB DDR5 RDIMM is built for HPE server and workstation platforms that require registered ECC memory. It targets IT professionals who need to expand capacity in compatible systems using a single high-density module. The part is validated for the HPE P43334-K21 specification and ships new from NEMIX RAM.

Thermals Noise and Power

Operating at 1.10V, the module draws low power for its density and runs without a heat spreader. Registered buffering and ECC functionality add negligible latency overhead while maintaining signal integrity under sustained server workloads. No active cooling is required beyond standard chassis airflow.

Deciding Specification 4Rx4 Rank Configuration

The 4Rx4 organisation determines whether the memory controller can address this module at the rated 4800MT/s speed. Systems limited to dual-rank or single-rank DIMMs will not support the full capacity or may fall back to a lower data rate. Verify the platform rank limit before purchase.

How it compares

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

Price $3,721.99
Pricier than about 75% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $29.08 per GB
Pricier than about 82% 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 numberMR38400-744K1
Total capacity128 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 systemsHPE
In the box
Included items128 GB (1 × 128 GB) DDR5 4800 MHz PC5-38400 4Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory

Questions about this item

How do I install this 288-pin DDR5 RDIMM in my HPE server and what step is often missed?

Power off the server, open the chassis, align the notch on the 288-pin DDR5 RDIMM with the slot key, press firmly until both ejector clips lock, then verify in BIOS that the 128GB module registers at 4800 MT/s with ECC active.

What maintenance or replacement will this 4Rx4 registered ECC module need over its service life?

The module has no heat spreader and no moving parts, so no scheduled maintenance is required; if a correctable ECC error count rises above the platform threshold, replace the DIMM under the lifetime replacement warranty.

What limit appears first when this CL40 1.1V DIMM runs sustained workloads?

The CAS latency of 40 cycles at 4800 MT/s sets the timing floor, so sustained throughput is bounded by the 38400 MB/s PC5-38400 rating before thermal or voltage limits are reached.

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