General

Engineer's Note

This DDR3-1600 ECC UDIMM is a server-grade memory module optimized for single-socket servers and entry-level workstations running data-integrity-dependent workloads such as light virtualization, database caching, or network-attached storage. Its unbuffered, dual-rank x8 organization and CL11 latency provide fast rank interleaving for improved throughput while maintaining signal stability, and the integrated ECC reliably detects and corrects single-bit errors to ensure 24/7 operational uptime.

Technical Specs & Insights

1. ECC protection detects and corrects single-bit memory errors on the fly, safeguarding transactional data and preventing silent corruption that could crash long-running server processes.
2. An 8GB capacity supplies enough workspace to host multiple lightweight virtual machines or containers simultaneously, avoiding the performance cliff of disk swapping under moderate consolidation.
3. Operating at 1600MHz, the module provides a peak throughput of 12.8GB/s, which speeds up in-memory database lookups and large file serving during peak request windows.
4. Dual Rank x8 organization interleaves accesses across two internal rank groups, keeping the memory channel fed with commands and raising sustained bandwidth for streaming analytics workloads.
5. Unbuffered signal topology trims command-to-data latency and lowers the bill-of-materials overhead, making it a pragmatic fit for cost-sensitive small-business servers where DIMM-per-channel counts stay modest.

Why These Specs Matter

Designed for entry-level servers and workstations, the Samsung M391B1G73BH0-CK0 is an 8GB DDR3 1600MHz Unbuffered ECC UDIMM that turns reliability into a tangible business advantage. Its ECC engine continuously detects and corrects single-bit memory errors, which is critical in a virtualized cluster running multiple VMs: a flipped bit in a hypervisor’s memory can silently corrupt a virtual disk or crash an entire node, and ECC stops that failure before it cascades. The dual-rank x8 organization interleaves two sets of memory chips on the module, allowing the memory controller to pipeline commands more efficiently. In a Redis or memcached instance serving thousands of queries per second, that rank interleaving raises sustainable IOPS and lowers tail latency, so your real-time analytics dashboard doesn’t stutter under peak load. Running at PC3-12800 with CL11 timing, the module delivers 12.8 GB/s of bandwidth, ensuring that simultaneous backup jobs and database checkpoints complete within maintenance windows without saturating the memory bus. As an unbuffered 1.5V module, it sidesteps the extra clock cycle penalty of registered DIMMs, which means faster command-to-response for latency-sensitive financial transaction logs. This is memory that protects your data integrity while sustaining the throughput your workloads demand.

Endurance & Reliability

This 8GB DDR3-1600 ECC Unbuffered DIMM (M391B1G73BH0-CK0) is a server-class memory module built for data integrity. Because ECC UDIMMs are typically deployed on single-socket platforms with a limited number of slots, capacity planning must maximize every available DIMM position. All recommendations leverage the module’s dual-rank x8 design and 1.5V operation while respecting common four-slot server constraints.

General Virtualization
Fill all memory channels with identical 8GB UDIMMs to reach the platform's usual 32 GB maximum (4 x 8 GB). This stable, ECC-protected pool comfortably supports several light-to-medium virtual machines and absorbs occasional memory errors without host disruption. Keeping the configuration fully populated balances capacity and cost for entry-level virtualization.

In-Memory Database
Max out capacity with four matched modules, providing 32 GB of reliable, error-corrected storage for caching or small database instances. The dual-rank construction aids memory interleaving, which improves access efficiency under heavy read/write loads, while ECC is essential for safeguarding in-flight transactions.

High-Performance Computing
Achieve peak bandwidth by installing the modules in a balanced layout aligned with the CPU’s memory channels—for a quad-channel system, use four 8 GB UDIMMs. This symmetrical population pattern enables full interleaved access, minimizes latency, and supplies a stable 32 GB footprint for throughput-sensitive scientific and analytical workloads.

Verified Compatibility

Rigorously tested server memory, compatible with Dell PowerEdge T20, HP MicroServer Gen8, Lenovo ThinkServer TS140.

FAQ