370-AHHL Dell 512GB 4800MHz PC5-4800 CL22 ECC DDR5 SDRAM 288-Pin RDIMM Memory

Dell 512GB 4800MHz Memory Overview

The Dell 370-AHHL 512GB 4800MHz PC5-4800 CL22 ECC Registered 2rx8 1.2v DDR5 SDRAM 288-Pin RDIMM Memory for Server represents a high-capacity, high-performance server memory solution engineered for modern data center workloads. As a category, these DDR5 RDIMM modules combine the industry’s latest memory architecture improvements with enterprise-grade reliability features such as ECC (error-correcting code) and registered buffering. Designed for dense memory configurations, virtualization hosts, large in-memory databases, and mission-critical applications, the Dell 370-AHHL family of modules emphasizes capacity, throughput, and fault tolerance while maintaining power efficiency at 1.2 volts.

Technical specification

The specification string for Dell 370-AHHL 512GB 4800MHz PC5-4800 CL22 ECC Registered 2rx8 1.2v DDR5 SDRAM 288-Pin RDIMM Memory for Server can be unpacked into actionable, decision-making details for purchasers and engineers. The 512GB figure denotes the single-module capacity, suitable for servers requiring very large memory footprints per DIMM slot. The 4800MHz (often referenced as DDR5-4800 or PC5-4800) indicates the data rate and translates to higher throughput compared with prior DDR4 generations, enabling faster data movement for I/O-bound and memory-bound processes. CL22 refers to the CAS latency nominally associated with DDR5 at this frequency; it is one element of memory response time and should be read in context with overall system design rather than in isolation. ECC Registered shows that this DIMM includes error-correcting circuitry and a register (also called buffered memory) which increases signal integrity across many modules — a requirement in most server environments where data integrity matters. The 2rx8 marking specifies a dual-rank layout with x8 chips, influencing memory channel population and server BIOS-level rank interleaving. 1.2v is the JEDEC standard operating voltage for DDR5, balancing performance with thermal and power efficiency. Finally, the 288-pin form factor is the standard physical interface for DDR5 RDIMMs in modern servers.

ECC Registered RDIMM

Enterprise deployments demand more than raw speed; they require predictable uptime and data integrity. ECC (Error Correcting Code) functionality automatically detects and corrects single-bit memory errors and detects multi-bit errors, preventing silent data corruption. Registered (RDIMM) modules place a register between the DRAM chips and the memory controller, reducing electrical load and improving signal timing when many DIMMs are installed. Together, ECC and RDIMM architecture ensure that a server populated with multiple Dell 370-AHHL modules can operate reliably under heavy multi-threaded loads, high memory population counts, and sustained 24/7 operations typical of cloud, virtualization, and database servers.

Performance

Performance in server memory involves a balance between bandwidth and latency. The Dell 370-AHHL 512GB 4800MHz PC5-4800 CL22 ECC Registered module offers strong bandwidth for throughput-sensitive applications such as large-scale analytics, caching layers, and memory-intensive virtualization. In large-memory installations where capacity is primary, this module’s 512GB density reduces the number of DIMMs needed to reach terabyte-scale configurations, which can decrease inter-module latency penalties and channel congestion. When designing systems, engineers should consider the trade-offs: higher-density RDIMMs can increase capacity per channel but may alter achievable memory frequency and latency depending on platform support and BIOS tuning.

Compatibility

The Dell 370-AHHL module is tailored to modern server environments that support DDR5 RDIMM memory, including many Dell PowerEdge platforms and compatible OEM motherboards that list PC5-4800 RDIMM support on their hardware compatibility list (HCL). Administrators should consult server documentation and the HCL before deployment to confirm supported memory topologies, maximum densities, and BIOS versions required for optimal operation. Because DDR5 introduced architectural differences relative to DDR4, mixing DDR5 RDIMM with older memory types or unbuffered DIMMs is not supported. Equally important is following the vendor's guidance on identical-module population for multi-channel interleaving — matching capacities, speeds, and ranks across populated slots results in the best stability and predictable performance. Systems that support multi-socket CPU configurations will often have specific guidelines on population order and the maximum number of ranks per channel; understanding 2Rx8 behavior in those contexts ensures the Dell 370-AHHL memory delivers intended performance and reliability.

Use Cases

High-capacity DDR5 RDIMMs such as the Dell 370-AHHL 512GB 4800MHz PC5-4800 CL22 ECC Registered module are particularly valuable in several server scenarios. Virtualization hosts benefit because every virtual machine consumes memory, and higher DIMM densities allow more VMs per host without sacrificing memory overhead for management functions. In-memory databases and large in-memory analytics platforms benefit from both the increased capacity and the greater memory bandwidth of DDR5, enabling larger datasets to be cached and queried more rapidly. High-performance computing (HPC) clusters that require consistent memory capacity across nodes will find enterprise-grade ECC Registered modules essential for error resilience during long computational runs. Similarly, AI inference servers running large models or model ensembles can use these DIMMs to accommodate models and intermediate activations in memory without resorting to slower storage tiers. Because these modules are engineered for continuous operation, use cases which penalize downtime or tolerate no silent data corruption are the best fit.

Latency

CAS latency numbers like CL22 are frequently cited in memory specifications, but their real-world impact depends on clock period and effective cycles. Memory latency is a product of both the CAS cycles and the memory clock period; at DDR5-4800 speeds, the absolute time per CAS cycle is lower than in slower memories, which partly offsets larger CAS numbers. In practice, throughput-sensitive workloads that stream large amounts of data benefit more from the increased bandwidth of PC5-4800 than microsecond-scale differences in CAS latency. When architects design systems where single-thread latency is paramount, consider both CPU memory controller tuning and software optimizations; when large aggregated throughput or capacity matters, module density and frequency are often the dominant factors. The Dell 370-AHHL 512GB 4800MHz PC5-4800 CL22 ECC Registered RDIMM therefore targets scenarios where capacity and bandwidth are critical while maintaining sensible latency characteristics for server-grade applications.