OWC 256GB (4x64GB) DDR4 2933 ECC RDIMM memory upgrade
- 256GB (4 x 64GB)
- 288-Pin DDR4 ECC RD…
OWC
A 256GB quad-channel kit of four 64GB DDR4 3200MHz CL22 ECC load-reduced DIMMs for servers and workstations
Capacity 256GB (4 x 64GB)
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.
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.
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.
| Brand | OWC |
|---|---|
| Part Number | 3L2D44R4256S |
| Capacity | 256GB (4 x 64GB) |
| Type | 288-Pin DDR4 ECC LRDIMM |
| Speed | DDR4 3200 (PC4 25600) |
| CAS Latency | CL22 |
| Voltage | 1.2V |
| ECC | Yes |
| Buffered/Registered | Load Reduced |
| Rank | 4Rx4 |
| Multi-channel Kit | Dual Channel Kit |
| Heat Spreader | No |
其他版本
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The modules are backward compatible with 2666MHz and will automatically operate at that lower speed when installed in a system limited to it.
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.
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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