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Four green DDR4 LRDIMM sticks in anti-static bags

OWC

OWC 256GB (4x64GB) DDR4 3200MHz CL22 ECC LRDIMM 1.2V 288-pin server RAM

SKU CH-SMCV-B2ZNK

A 256GB quad-channel kit of four 64GB DDR4 3200MHz CL22 ECC load-reduced DIMMs for servers and workstations

  • Capacity256GB (4 x 64GB)
  • Type288-Pin DDR4 ECC LRDIMM
  • SpeedDDR4 3200 (PC4 25600)
  • CAS LatencyCL22
  • Voltage1.2V
  • ECCYes

Capacity 256GB (4 x 64GB)

  • ECC load-reduced design protects data integrity in servers
  • 256GB total capacity across four 64GB modules
  • DDR4 3200MHz CL22 at 1.2V for efficient performance
  • 288-pin LRDIMM form factor fits server and workstation slots
  • Backward compatible with 2133, 2400, 2666 and 2933MHz systems

Server ECC LRDIMM kit

This OWC kit supplies 256GB of DDR4 server memory across four 64GB load-reduced DIMMs. It targets administrators upgrading workstations, servers or NAS systems that require registered ECC modules. The kit is not compatible with standard desktop platforms or unbuffered memory configurations. Each module operates at 1.2V and meets JEDEC PC4-25600 specifications.

288-pin registered design

The 288-pin LRDIMM form factor fits server DIMM slots and presents a reduced electrical load to the memory controller. ECC circuitry detects and corrects single-bit errors to protect data integrity in multi-socket or high-capacity deployments. Four-rank 4Rx4 organisation allows dense population without exceeding rank limits on supported platforms. No heat spreaders are fitted, so airflow must follow chassis guidelines.

Backward-compatible speed range

Modules run at 3200MHz CL22 and automatically down-clock to 2933MHz, 2666MHz, 2400MHz or 2133MHz when installed in slower systems. The upgrade suits operators extending the life of older DDR4 infrastructure or building new servers within budget. It replaces lower-capacity registered kits where 64GB per slot is required. Desktop builders needing unbuffered memory should look elsewhere.

Points forts

  • ECC load-reduced design protects data integrity in servers
  • 256GB total capacity across four 64GB modules
  • DDR4 3200MHz CL22 at 1.2V for efficient performance
  • 288-pin LRDIMM form factor fits server and workstation slots
  • Backward compatible with 2133, 2400, 2666 and 2933MHz systems

Caractéristiques

BrandOWC
Part Number3L2D44R4256S
Capacity256GB (4 x 64GB)
Type288-Pin DDR4 ECC LRDIMM
SpeedDDR4 3200 (PC4 25600)
CAS LatencyCL22
Voltage1.2V
ECCYes
Buffered/RegisteredLoad Reduced
Rank4Rx4
Multi-channel KitDual Channel Kit
Heat SpreaderNo

Autres versions de ce modèle

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Questions sur cet article

What speed does the PC4-25600 DDR4 3200MHz interface actually run at in a system that only supports 2666MHz?

The modules are backward compatible with 2666MHz and will automatically operate at that lower speed when installed in a system limited to it.

Does the 288-pin LRDIMM form factor with 4Rx4 rank configuration require a specific server motherboard slot layout?

Yes, the 288-pin LRDIMM design fits standard DDR4 server DIMM slots, but the motherboard must explicitly support Load Reduced ECC memory and 4Rx4 rank density.

How are the four 64GB modules installed to activate the dual-channel kit architecture correctly?

Install the four modules in the motherboard's designated dual-channel slot pairs — typically slots of the same colour — following the manual's population sequence for 4Rx4 LRDIMMs.

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