General

Engineer's Note

This DDR4-2933 ECC Unbuffered DIMM, with its dual-rank x8 organization and CL21 latency, is ideally suited for entry-level servers and workstations running memory-integrity-sensitive workloads such as virtualization, light database hosting, or NAS appliances. Its error-correcting code ensures single-bit error correction and multi-bit detection, while the dual-rank configuration improves interleaving efficiency for stable throughput under sustained load.

Technical Specs & Insights

1. 32 GB capacity per module delivers ample headroom for memory‑hungry virtualized workloads, allowing more VMs per server without hitting swap.
2. DDR4 technology guarantees broad compatibility with current‑generation server platforms while maintaining low power draw for dense rack deployments.
3. 2933 MHz clock speed raises available memory bandwidth, helping CPU cores serve concurrent database queries and containerized microservices with lower latency.
4. ECC error correction silently detects and fixes single‑bit memory faults, which is non‑negotiable for financial transactions, scientific computing, or any workload where data integrity directly impacts business continuity.
5. Dual Rank x8 organization interleaves access across two internal rank groups, sustaining higher channel utilization under mixed read/write traffic typical of heavily consolidated virtual machines.

Why These Specs Matter

The Samsung M391A4G43AB1-CVF is a 32GB DDR4-2933 Unbuffered ECC UDIMM, designed for workstations and entry-level servers that demand data integrity without the cost of registered memory. Its ECC protection actively eliminates silent data corruption. In a 24/7 virtualized environment, a single-bit error can corrupt a database record or financial log; ECC corrects such errors on the fly, meaning your business never has to question data accuracy. The 32GB capacity and Dual Rank x8 design let you run multiple memory-hungry VMs or an in-memory database like Memcached with confidence. Dual Rank uses bank interleaving to boost sustained bandwidth and reduce access delays under concurrent workloads—essential for smooth virtualization performance. Operating at 2933MHz with a low 1.2V, this module delivers high throughput while minimizing power consumption, a critical factor for always-on systems where every watt counts. For professionals running CAD simulations or database servers where accuracy is paramount, this UDIMM ECC module translates its quad of features into mission-critical reliability.

Endurance & Reliability

This is a DDR4-2933 ECC Unbuffered UDIMM, a server-class memory module commonly deployed in entry-level servers, small-to-medium business servers, and workstations using platforms like Intel Xeon E-2300 or AMD Ryzen PRO. With 32 GB capacity per stick and dual-rank design, it balances density and signal integrity for memory-intensive workloads. Below are capacity planning guidelines for typical server scenarios.

General Virtualization
Virtualized environments hosting multiple VMs demand large memory pools and reliability. Populate all available channels with these 32 GB ECC UDIMMs in a balanced configuration (e.g., four modules in a quad-channel board for 128 GB total). This ensures ample headroom for VM memory overcommitment while ECC mitigates data corruption risks. Stick to one DIMM per channel initially to maximize speed; add a second DIMM per channel only if you need to scale beyond 50% of total slots, and expect a slight speed drop due to dual-rank loading.

In-Memory Database
In-memory databases (Redis, SAP HANA) require maximum capacity and fault tolerance. Fill every DIMM slot with these 32 GB UDIMMs to reach the platform’s ceiling — typically 128 GB on 4-slot micro-ATX server boards. Run a symmetrical dual-DIMM-per-channel setup if supported, as dual-rank modules already offer high rank interleaving. Prioritize capacity over frequency; the dual-rank x8 organization delivers strong bandwidth that keeps latency low for real-time transactions.

High-Performance Computing (HPC)
HPC clusters favor memory bandwidth and cost-efficiency. For compute nodes, populate one 32 GB DIMM per memory channel (one DPC) to maintain peak 2933 MT/s speed, providing 64–128 GB per node depending on channel count. This avoids downclocking often seen with two DIMMs per channel and ensures maximum throughput for parallel simulations. Use ECC to protect long-running calculations against silent data errors, which is critical for scientific workloads.

Verified Compatibility

Tested for guaranteed compatibility with servers like Dell PowerEdge T150, HPE ProLiant DL20 Gen10 Plus, and Lenovo ThinkSystem ST250.

FAQ