
Safe checkout
Secure payments
Fast dispatch
1–2 day handling
Free shipping
U.S. ground
Warranty & RMA
Support after delivery
HP M0S31A 128GB Kit (4x32GB) DDR4-2133MHz RDIMM 2Rx4 CL15 Memory
- Total Capacity: 128GB
- Module Configuration: 4 x 32GB
- Memory Type: DDR4 SDRAM
- Speed: 2133MHz (PC4-17000)
- Form Factor: RDIMM (Registered DIMM)
- Rank: 2Rx4 (Dual Rank x4)
- CAS Latency: CL15
- ECC (Error-Correcting Code) support
Was $2,025.53 · You save $303.53
Key specifications
See full specs ↓- Product Type
- Memory Kit
- Capacity
- 128GB
- Module Size
- 4 x 32GB
- Memory Technology
- DDR4 SDRAM
- Speed
- 2133MHz
- Form Factor
- RDIMM
Product details
The HP M0S31A is a 128GB memory kit consisting of four 32GB DDR4-2133MHz RDIMM modules. It is designed for servers and workstations requiring high-capacity, high-performance RAM.
Technical Information
| Product Type | Memory Kit |
| Capacity | 128GB |
| Module Size | 4 x 32GB |
| Memory Technology | DDR4 SDRAM |
| Speed | 2133MHz |
Additional Specifications
| Form Factor | RDIMM |
| ECC | Yes |
| Rank | 2Rx4 |
| CAS Latency | CL15 |
Description
The HP M0S31A memory kit provides a substantial 128GB of high-performance DDR4 RAM, distributed across four 32GB Registered DIMM (RDIMM) modules. This configuration is optimized for servers and workstations that demand significant memory capacity and speed for demanding applications and virtualization environments. Operating at a frequency of 2133MHz (also known as PC4-17000), these modules offer a considerable bandwidth improvement over previous DDR generations. The 2Rx4 dual-rank configuration further enhances performance by allowing the memory controller to access different banks of memory more concurrently. The inclusion of ECC (Error-Correcting Code) ensures data integrity, which is critical for mission-critical server operations. With a CAS Latency of CL15, this memory kit strikes a balance between speed and stability. The RDIMM format includes an onboard register that buffers data signals, reducing electrical load on the memory controller and enabling higher memory capacities and speeds. This makes the M0S31A kit a robust choice for upgrading or populating memory in compatible HP ProLiant servers and other enterprise-grade systems.
Condition: Refurbished
Free U.S. ground shipping
Typically 1–2 days handling, 3–7 days in transit.
Purchase orders accepted
Government, enterprise, data center and small business.
Buying 10+ units?
Get volume pricing and availability for M0S31A.


