OWC 256GB (8x32GB) DDR4 2933 PC4-23400 CL21 2Rx4 288-pin 1.2V ECC Registered RDIMM memory upgrade CascadeLake
- 256GB (8 x 32GB)
- 288-Pin DDR4 ECC RD…
OWC
Four 128 GB DDR4 2933 MHz ECC registered RDIMMs totalling 512 GB for servers and workstations
Capacity 512GB (4 x 128GB)
Rank 4Rx4
This kit delivers 512GB of DDR4 memory across four 128GB registered DIMMs. It targets administrators upgrading enterprise servers, workstations or NAS systems that require error-correcting code and registered signal buffering for stability under sustained load.
The modules operate at 1.2V and conform to the PC4-23400 standard with CL21 timing. They are backward compatible with 2133MHz, 2400MHz and 2666MHz bus speeds. Systems must accept 4Rx4 registered DIMMs; unbuffered consumer platforms cannot use this memory.
No heat spreaders are fitted, reducing module height for tight slot spacing. Power draw stays at the standard DDR4 1.2V level, letting existing server cooling handle thermal load without additional fan speed or noise increase during typical operation.
| Brand | OWC |
|---|---|
| Part Number | 2R9D44R4512S |
| Capacity | 512GB (4 x 128GB) |
| Type | 288-Pin DDR4 ECC RDIMM |
| Speed | DDR4 2933 (PC4 23400) |
| CAS Latency | CL21 |
| Voltage | 1.2V |
| ECC | Yes |
| Buffered/Registered | Registered |
| Rank | 4Rx4 |
| Multi-channel Kit | Dual Channel Kit |
| Heat Spreader | No |
其他版本
同系列產品,記憶體、散熱器或時脈不同 — 下單前請先比較。
Each 128GB module is quad-rank 4Rx4; most server chipsets allow eight ranks per channel, so two modules per channel reach that ceiling before all four slots are used.
Registered ECC modules at 1.2V typically draw 3–5 watts each under sustained load; four modules stay well within normal server airflow limits without spreaders.
Yes — the kit requires a server or workstation board with DDR4 registered ECC memory controllers and 288-pin RDIMM sockets; it will not work in standard desktop systems.
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