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Two green DDR5 RDIMM modules, bare chips, 288-pin, 64GB kit

NEMIX RAM

NEMIX RAM DDR5 5600 64GB (2x32GB) ECC RDIMM CL46 1.1V 2Rx4 288-Pin Lenovo SR655 V3

SKU CH-S5XW-5PZA0

A 64 GB DDR5 ECC RDIMM kit with two 32 GB modules running at 5600 MT/s, CL46, 1.1 V, built for Lenovo ThinkSystem SR655 V3 servers

  • Total capacity64 GB (2 × 32 GB)
  • Rated speedDDR5 5600 (PC5 44800)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL46
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • ECC protection prevents data corruption with built-in error correction
  • 5600 MT/s DDR5 speed delivers high bandwidth for server workloads
  • 64 GB kit (2 × 32 GB) expands memory capacity for demanding applications
  • Registered RDIMM design reduces electrical load for stable multi-module operation
  • Validated for Lenovo ThinkSystem SR655 V3 AI Server compatibility

Lenovo SR655 V3 DDR5 Kit

This 64GB kit provides two 32GB DDR5 5600 registered DIMMs built for the Lenovo ThinkSystem SR655 V3 AI server. ECC and registered buffering protect data integrity in enterprise workloads. The modules operate at 1.1V with a CL46 latency profile. They install directly into the server's 288-pin DDR5 slots.

64GB Registered ECC Capacity

Dual-rank 2Rx4 organisation gives each module density for virtualisation, AI inference and large database buffers. Registered signalling reduces electrical load on the memory controller at full population. The kit fills two slots, leaving remaining channels open for future expansion. Workloads exceeding 64GB will require additional kits.

Upgrade From Smaller DDR5 Kits

Replacing single-rank or lower-capacity DDR5 RDIMMs doubles per-slot density without changing voltage or speed. The jump is worthwhile when current memory limits container counts or model sizes. Servers already running 5600MHz registered ECC gain capacity headroom while maintaining identical timing and power characteristics.

How it compares

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

Price $2,116.99
Pricier than about 69% of the 21,161 comparable items (median $397.99).
Total capacity 64 GB (2 × 32 GB)
Higher than about 60% of the 20,941 comparable items (median 32 GB).
Price per GB $33.08 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 numberMR44800-324K2
Total capacity64 GB (2 × 32 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 (2 × 32 GB) DDR5 5600 MHz PC5-44800 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

Questions about this item

Will this DDR5 5600 ECC RDIMM kit run alongside existing DDR5 modules in my Lenovo ThinkSystem SR655 V3?

This kit uses DDR5 5600 registered ECC modules; mixing with other DDR5 DIMMs of different speeds, ranks or voltages may prevent the server from posting or force all memory to run at the lowest common speed.

How can I confirm the kit is operating at 5600 MHz with CL46 latency after installation?

Enter the system BIOS or UEFI and check the memory information screen — it should report 5600 MT/s, CAS latency 46, 1.10 V and registered ECC mode for each installed DIMM.

What does the package contain and are any extra parts required for installation?

The box includes two 32 GB 288-pin DDR5 RDIMMs (64 GB total); no heat spreaders, cables, brackets or additional components are supplied or needed for standard server DIMM slots.

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