CMM (DDR5)
Samsung CMM-D 256GB
High-capacity 256 GB CXL expansion for memory-bound server workloads
- Manufacturer
- Samsung
- Interface
- CXL 2.0
- Form factor
- E3.S 2T
- Category
- CXL Memory
- Series
- CMM (DDR5)
- Status
- Sampling
Image: samsung.com
256 GB CXL 2.0 module doubling per-device expansion capacity for in-memory database and tiered-memory deployments.
Capacities
Overview
What this part is for
The 256 GB CMM-D doubles per-module expansion capacity, letting a handful of E3.S bays add a terabyte of tiered DRAM to a standard two-socket server. The module runs on CXL 2.0 over PCIe 5.0 x8 with the same software-visible NUMA model as its 128 GB sibling.
Primary targets are SAP HANA-class databases, large Redis and Memcached tiers, and recommendation-model serving, where capacity per node dictates fleet size. Telemetry and RAS reporting integrate with server management stacks for production monitoring.
Datasheet
Specifications
7 rows, factory-original data
| Interface | CXL 2.0, PCIe 5.0 x8 |
|---|---|
| Form Factor | E3.S 2T |
| Capacity | 256 GB |
| Media | DDR5 DRAM |
| Bandwidth | Up to ~32 GB/s per module |
| Features | Memory tiering, RAS telemetry |
| Target | In-memory DB, caching tiers |
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