16GB DDR4-2666 PC4-21300 1.2V ECC CL19 288-Pin Registered RDIMM Server Memory Ram
Description
This 16GB DDR4 Registered (RDIMM) ECC memory module is built for server/workstation platforms that require buffered memory for stability and reliability. It’s a dual-rank (2Rx8) PC4-21300 (2666MT/s) module and is commonly used in HPE ProLiant Gen10-class systems and compatible enterprise platforms that support DDR4 RDIMM ECC.
Technical Specifications
- Capacity: 16GB (1x16GB)
- Memory Type: DDR4 SDRAM
- Speed: DDR4-2666 (PC4-21300)
- Rank: 2Rx8 (Dual Rank x8)
- ECC: Yes
- Signal Type: Registered (RDIMM)
- CAS Latency: CL19
- Pins: 288-Pin
- Voltage: 1.20V
- Form Factor: DDR4 RDIMM (Server/Workstation)
Interchangeable / Replacement Part Numbers
838089-B21, 868846-001, 840756-191, 840840-001, 840756-091, HMA82GR7AFR8N-VK, HMA82GR7CJR8N-VK
✅ Confirmed Compatibility
Please note that the following list is not exhaustive. Compatibility depends on your system's specific configuration. It's essential to verify compatibility with your system or enclosure manufacturer prior to installation.
✔ HPE ProLiant (Gen10): BL460c Gen10, DL325 Gen10, DL360 Gen10, DL380 Gen10, DL385 Gen10, DL560 Gen10, ML350 Gen10, XL230k Gen10
✔ HPE Synergy (Gen10): Synergy 480 Gen10, Synergy 660 Gen10
☑️ Key Features
- RDIMM + ECC support for improved reliability vs non-ECC desktop memory
- Dual-rank (2Rx8) design commonly supported across enterprise platforms
- 2666MT/s performance (PC4-21300) for balanced speed and stability
- 1.2V operating voltage for efficient power usage
- 288-pin DDR4 Registered DIMM form factor (server/workstation)
⚙️ Fit Notes
- RDIMM and UDIMM are not interchangeable—this module requires a system that supports DDR4 RDIMM ECC.
- Do not mix RDIMM and LRDIMM in the same system (most platforms do not support mixed types).
- Memory speed may downclock based on CPU generation, BIOS settings, and population rules.
- For best results, match capacity/rank/speed across channels when possible (especially in multi-CPU servers).
