Brand: HPE | Category: Memory (RAM)
SKU: P50314-B21 | Part #: P50314-B21 | MPN: P50314-B21
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The HPE 256GB (1x256GB) Octal Rank x4 DDR5-4800 CAS-40-39-39 Load Reduced Smart Memory Kit (P50314-B21) represents a high-density DDR5 memory solution engineered for HPE ProLiant Gen11 servers operating under the most demanding enterprise and AI workloads. Built on the DDR5-4800 standard with a CAS latency profile of 40-39-39, this Load Reduced DIMM (LRDIMM) architecture employs an on-module data buffer to reduce the electrical load presented to the memory controller, enabling higher-capacity memory populations per channel without sacrificing signal integrity or stability at full-rack scale deployments.
As an octal-rank (8Rx4) x4 device, the module achieves its 256GB capacity through eight independent rank groups, each organized across a x4-wide DRAM bus per chip, optimizing bit density per physical DIMM slot. HPE Smart Memory technology integrates an on-module Serial Presence Detect (SPD) with HPE-specific configuration data that enables automatic recognition and validation by HPE ProLiant system firmware (UEFI/BIOS), streamlining memory population verification and reducing configuration errors in large-scale server deployments. The module operates at 1.1V, consistent with the DDR5 standard, contributing to improved energy efficiency relative to prior DDR4 generations at equivalent or greater capacity points.
This memory kit is purpose-built for enterprise datacenters, high-performance computing (HPC) clusters, in-memory database platforms, and AI/ML inference and training infrastructure where maximum per-socket memory addressability is a primary architectural constraint. Its compatibility with HPE's memory validation and firmware ecosystem ensures seamless integration into HPE ProLiant Gen11 platforms, supporting the highest memory capacity configurations available within those server generations.
| Manufacturer | HPE |
| Manufacturer Part Number | P50314-B21 |
| Module Capacity | 256GB |
| Kit Configuration | 1x256GB |
| Memory Technology | DDR5 |
| Module Type | LRDIMM (Load Reduced DIMM) |
| Memory Speed | DDR5-4800 |
| CAS Latency Profile | CAS-40-39-39 |
| Rank Configuration | 8Rx4 (Octal Rank, x4 organization) |
| Operating Voltage | 1.1V |
| Module Form Factor | 288-pin DIMM |
| HPE Smart Memory | Yes — on-module SPD with HPE firmware validation support |
| ECC Support | Yes |
| Compatible Server Generation | HPE ProLiant Gen11 |
| Registered / Buffered | Load Registered (LRDIMM) |
Available from Omnixon Global. Submit an RFQ and our team will confirm configuration and availability for your order.
| Brand | HPE |
| Category | Memory (RAM) |
| SKU | P50314-B21 |
| Part Number | P50314-B21 |
| Condition | New |
| Manufacturer Part Number | P50314-B21 |
| Module Capacity | 256GB |
| Kit Configuration | 1x256GB |
| Memory Technology | DDR5 |
| Module Type | LRDIMM (Load Reduced DIMM) |
| Memory Speed | DDR5-4800 |
| CAS Latency Profile | CAS-40-39-39 |
| Rank Configuration | 8Rx4 (Octal Rank, x4 organization) |
| Operating Voltage | 1.1V |
| Module Form Factor | 288-pin DIMM |
| HPE Smart Memory | Yes — on-module SPD with HPE firmware validation support |
| ECC Support | Yes |
| Compatible Server Generation | HPE ProLiant Gen11 |
| Registered / Buffered | Load Registered (LRDIMM) |
Part number P50314-B21 is qualified for HPE servers that list compatible memory in their QVL. We verify QVL match before quoting — share your server model in the RFQ and our pre-sales engineers confirm fit, recommended population pattern, and total capacity supported.
Full manufacturer support (typically 3 years, RDIMM/LRDIMM SKUs often lifetime against manufacturing defects). All product is sourced through distribution so support registers cleanly under your company name.
Submit the RFQ form on this page with your quantity and destination country. Our pre-sales team responds with a vendor-confirmed quote, availability, and matching server-QVL confirmation if needed.