AD277158 Dell 16GB DDR5 Pc5-51200 6400mt/s 1rx8 Ecc SDRAM 288-pin RAM Module For Server

Dell AD277158 is a 16GB DDR5 Registered DIMM (RDIMM) engineered to meet the demanding memory needs of modern Dell PowerEdge servers such as the R770 and R670. Clocked at an industry-leading 6400 MT/s (PC5-51200), this memory module brings improved bandwidth, lower latency characteristics, and energy-efficient operation at 1.1V nominal voltage. Built with ECC (Error-Correcting Code) and a 1Rx8 rank configuration, the AD277158 module provides a balance of reliability and density that enterprise workloads require.

Dell AD277158 for Your Server Fleet

Upgrading server memory is one of the most cost-effective ways to boost system performance, reduce latency for memory-bound applications, and increase virtualization density. The AD277158 16GB RDIMM is optimized for enterprise-class reliability and is designed to work transparently within Dell server platforms. ECC Registered modules like this one protect mission-critical workloads against single-bit memory errors, which can otherwise cause crashes, silent data corruption, or unexpected behavior.

Performance Advantages

DDR5 memory architecture introduces significant improvements compared with DDR4 — higher per-module bandwidth, on-die ECC features, and molecular-level power savings via lower voltage operation. The 6400 MT/s rating on the AD277158 allows for faster memory access across multi-threaded server applications such as databases, in-memory caching, virtualization hosts (hypervisors), and data analytics platforms.

Real-World Impact

In practice, installing higher-speed DDR5 RDIMMs can reduce data retrieval times, lower overall job completion times for parallel workloads, and increase the number of virtual machines (VMs) a host can run without swapping. Where latency and consistent throughput matter — for example in SQL/NoSQL databases, high-performance compute (HPC), and AI inference nodes — the Dell AD277158 helps keep bottlenecks away from the CPU-to-memory

Reliability, ECC, and Enterprise  

ECC and the registered (buffered) nature of RDIMMs make AD277158 fit for mission-critical applications. Registered memory includes a register between the DRAM modules and the memory controller which reduces electrical load, enabling higher memory density and improved signal integrity in multi-module configurations.

AD277158 vs Other Dell Memory Options

Choosing memory for a server involves balancing capacity, speed, latency, and price. Below is a practical comparison table describing where AD277158 sits relative to other typical offerings.

While mixing memory modules of the same speed and similar ranks may work, it is not recommended for production environments. Mixing modules can lead to the system negotiating to the slowest speed or causing stability issues. For predictable performance, populate channels with matched modules and follow Dell’s memory population rules.

 Does ECC Registered memory improve reliability

ECC detects and corrects single-bit memory errors and can detect (but not correct) multi-bit errors. Registered buffers reduce electrical load on the memory controller enabling higher memory densities and improved signal integrity. Combined, ECC and register buffering are fundamental for enterprise-grade reliability.

Does CL52 matter

CAS Latency (CL) is one measure of memory delay; however, raw latency values must be considered alongside clock speed (MT/s). DDR5’s higher frequency compensates for nominally larger CAS numbers, so real-world latency and throughput depend on both metrics. CL52 at 6400 MT/s offers a balance of high bandwidth and acceptable latency for server workloads.

Virtualization

A mid-sized hosting provider upgrades R770 hypervisor nodes from 32GB total memory (2x16GB DDR4) to higher-bandwidth 16GB DDR5 RDIMMs across all slots. The result: improved VM density, faster memory-bound operations, and measurable reductions in latency-sensitive application response times.

Enhanced Performance with DDR5 Technology

Built with the latest DDR5 architecture, this memory module provides accelerated bandwidth and superior multitasking capabilities compared to DDR4. It is engineered to handle modern workloads, virtualization, cloud applications, and database management systems. The higher transfer speeds help reduce latency and bottlenecks in business-critical operations.

Reliability with ECC Registered

The Dell AD277158 module incorporates ECC (Error-Correcting Code) and registered signal buffering to safeguard against data corruption. This feature is crucial in server environments where accuracy and stability are essential. By automatically detecting and correcting memory errors, it ensures consistent performance under heavy workloads.