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Green circuit board DDR5 RDIMM with black memory chips no heat spreader 288 pins

NEMIX RAM

NEMIX RAM 64GB DDR5 5600 CL46 2Rx4 ECC RDIMM Lenovo ThinkSystem SR655 V3 memory upgrade

SKU CH-3WDN-GW4W3

64 GB DDR5 5600 CL46 ECC registered DIMM for Lenovo ThinkSystem SR655 V3 servers

  • Total capacity64 GB
  • Rated speedDDR5 5600 (PC5 44800)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL46
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • Boosts server throughput with 64 GB DDR5 5600 capacity
  • Protects data integrity via ECC registered 2Rx4 design
  • Runs efficiently at 1.1 V low-voltage operation
  • Fits Lenovo ThinkSystem SR655 V3 with 288-pin RDIMM form factor
  • Built from major OEM Samsung, Micron, Hynix chipsets

Server-ready DDR5 module

This 64 GB DDR5 5600 CL46 ECC RDIMM is built for the Lenovo ThinkSystem SR655 V3 AI server. The registered design and 2Rx4 organisation suit multi-DIMM enterprise configurations. Buyers needing non-ECC consumer memory or laptop SO-DIMMs should look elsewhere.

Thermals, noise and power

Operating at 1.1 V, the module draws minimal power and generates little heat without a heat spreader. Silent solid-state operation adds no acoustic load to the server chassis. Systems requiring lower voltage or active cooling on the DIMM itself are not addressed by this part.

Deciding specification

The single figure that confirms fit is the 288-pin DDR5 RDIMM form factor combined with ECC and registered buffering at 5600 MT/s. Any platform that demands UDIMM, LRDIMM or a different pin count will not accept this module.

How it compares

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

Price $2,060.99
Pricier than about 69% 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 $32.20 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 lineNEMIX RAM Original Series Server Memory
Model nameDDR5 ECC RDIMM Registered Server Memory
Part numberMR44800-924K1
Total capacity64 GB
Product type288-Pin DDR5 RDIMM
Performance
Rated speedDDR5 5600 (PC5 44800)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL46
ECC supportYes
Buffer typeRegistered
Heat spreaderNo
Memory rank2Rx4
Power
Rated voltage1.1 V
Compatibility
Compatible systemsLenovo
In the box
Included items64 GB (1 × 64 GB) DDR5 5600 MHz PC5-44800 2Rx4 1.1 V 288-PIN ECC RDIMM

Questions about this item

How do I install the 64GB DDR5 5600 CL46 2Rx4 ECC RDIMM into my Lenovo ThinkSystem SR655 V3, and what step is often missed?

Power off the server, open the chassis, align the 288-pin module with the DDR5 slot, press firmly until the ejector clips lock, then verify in BIOS that the 64GB stick registers at 5600 MT/s with ECC enabled — the step most people skip is confirming the registered timing and ECC status after seating.

What maintenance or replacement will this 64GB DDR5 5600 CL46 2Rx4 ECC RDIMM need later?

No routine maintenance is required; the module has no heat spreader and runs at 1.1 V, so keep server airflow clean and monitor ECC corrected-error counters — if uncorrectable errors appear, replace the stick under lifetime replacement coverage.

What limit appears first when this 64GB DDR5 5600 CL46 2Rx4 ECC RDIMM runs under sustained load?

The CL46 latency at 5600 MT/s sets the timing boundary; sustained throughput is capped by the single 2Rx4 rank configuration and 1.1 V operating voltage before thermal throttling becomes a factor.

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