OWC 512GB (4x128GB) DDR4 2933MHz CL21 4Rx4 ECC Load Reduced LRDIMM 1.2V 288-pin Server RAM
- 512GB (4 x 128GB)
- 288-Pin DDR4 ECC LR…
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OWC
Eight 128 GB DDR4 3200 MHz CL22 ECC load-reduced LRDIMMs provide 1 TB of server memory with 1.2 V operation and backward compatibility to 2133 MHz
Capacity 1TB (8 x 128GB)
This kit supplies 1TB of DDR4 server memory across eight 128GB load-reduced DIMMs running at 3200MHz with CL22 latency. It targets administrators upgrading workstations, servers or NAS systems that require registered ECC modules. The load-reduced design reduces electrical load on the memory controller for high-density configurations. Standard desktop motherboards cannot use this memory.
Modules install into 288-pin DDR4 slots like ordinary DIMMs but the system must support load-reduced ECC registered memory. Mixing these LRDIMMs with unbuffered or standard registered DIMMs will prevent boot or cause instability. All eight sticks should populate matching channels per the platform's population rules. Backward compatibility covers 2133MHz, 2400MHz, 2666MHz and 2933MHz speeds if the platform cannot run 3200MHz.
Confirm the motherboard or server documentation explicitly lists support for DDR4 288-pin ECC load-reduced DIMMs at 4Rx4 rank. Verify the maximum supported capacity per slot and total system capacity reach 1TB. Ensure the BIOS or firmware is current enough to recognise 128GB density modules. Check that the platform voltage is 1.2V and that the memory controller accepts PC4-25600 speeds or one of the listed lower speeds.
| Brand | OWC |
|---|---|
| Part Number | 3L2D44R41TBK |
| Capacity | 1TB (8 x 128GB) |
| 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 |
Other versions of this model
Same family, different memory, cooler or clock — compare before you commit.
Check the BIOS or UEFI memory information screen; it should report 3200 MT/s, CL22 timings, 1.2 V and ECC Load Reduced mode for all eight 128 GB modules.
The package contains eight 128 GB 288-pin DDR4 ECC LRDIMM modules; no heat spreaders, cables or tools are included, so have a compatible server or workstation chassis ready.
Select the 1 TB (8 x 128 GB) kit — it provides the full dual-channel population with 4Rx4 organisation and is backward compatible with 2133, 2400, 2666 and 2933 MHz speeds.
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