General

Engineer's Note

This Samsung 8GB DDR3-1333 registered DIMM (M393B1K70CH0-YH9-CIS) operated at a low 1.35V with ECC is purpose-built for server platforms running virtualization or in-memory databases, where data integrity and uptime are non-negotiable. Its dual-rank design boosts memory bandwidth utilization, the CL9 latency delivers responsive access, and the registered signal architecture maintains clean command and address paths in densely populated RDIMM slots.

Technical Specs & Insights

1. Error-correcting code protection silently detects and repairs single-bit data corruption, preserving transactional integrity for database and financial processing workloads.
2. Registered buffering decouples the memory controller from heavy load, maintaining signal integrity across fully populated servers and large-scale virtualization hosts.
3. Dual-rank interleaving multiplies page-hit opportunities, keeping memory channels saturated to reduce latency spikes under multi-tenant cloud workloads.
4. Energy-efficient low voltage curbs power consumption at the rack level, directly lowering cooling overhead and operational expenditure in hyperscale data centers.
5. A moderate per-module capacity strikes the cost-versus-density sweet spot, enabling flexible expansion for memory-bound services like in-memory caching and container orchestration.

Why These Specs Matter

The M393B1K70CH0-YH9-CIS is unmistakably a server-class DIMM, and its four defining characteristics directly address the pain points of data centers and enterprise IT. First, the built-in ECC silently detects and corrects single-bit memory errors—the kind cosmic rays or electrical noise can trigger without warning. In a virtualized cluster hosting dozens of guest machines, a single uncorrected bit flip in a hypervisor’s state table can cascade into catastrophic downtime; ECC transforms that risk into a transparently corrected event, safeguarding transactional consistency and uptime. Second, the Registered signal buffer allows the server motherboard to reliably populate all 24 DIMM slots without electrical loading issues, meaning you can scale your memory footprint to hundreds of gigabytes for memory-hungry hypervisors without stability compromises. Third, the Dual Rank organization interleaves internal banks so that while one rank is refreshing or busy, the controller can stream data from the other. For an in-memory database like SAP HANA or a Redis cache handling millions of queries, that directly translates into higher sustained throughput and lower latency under load. Finally, the 1.35V DDR3L voltage cuts power draw and heat output compared to legacy 1.5V modules. Across a fleet of servers, this reduces cooling demand and operating expense while still delivering rock-solid 1333MHz performance. Each feature is not a datasheet bullet point but a critical enabler of data integrity, scalability, and the low total cost of ownership your infrastructure demands.

Endurance & Reliability

General Virtualization
Populate at least six of these 8GB registered ECC DIMMs evenly across available memory channels, targeting 48–64GB total capacity. Symmetric population per socket guarantees stable interleaving and prevents bottlenecks when running multiple virtual machines.

In-Memory Database
Maximize capacity by filling all DIMM slots with these dual-rank 8GB modules, aiming for 128GB or more on capable platforms. Keep one DIMM per channel where possible to leverage dual-rank throughput while maintaining low latency for large working sets entirely in RAM.

High-Performance Computing
Deploy one 8GB DIMM per memory channel to sustain peak DDR3-1333 bandwidth without rank contention. For dual-socket nodes, install 64GB total memory using identical modules, distributed equally across NUMA domains to ensure predictable per-core performance in tightly coupled parallel workloads.

Verified Compatibility

Rigorously tested server memory, compatible with Dell R720, HP DL380p Gen8, IBM x3650 M4, and more.

FAQ