HPE P50448-B21 Samsung 64GB 2Rx4 DDR5-4800 RDIMM Server Memory Kit
Overview
The HPE P50448-B21 is a 64GB DDR5-4800 registered DIMM (RDIMM) manufactured by Samsung and supplied as an HPE-qualified kit. As a 2Rx4 (dual-rank, x4 organization) PC5-4800B-R module, it targets HPE ProLiant and Synergy servers that require validated memory configurations — environments where unqualified DIMMs risk compatibility failures, reduced clock speeds, or system lockouts enforced by HPE's firmware. The "HPE KIT" designation means this specific DRAM assembly has passed HPE's validation matrix and ships with the part number your server's integrated management controller expects to see. For builds or upgrades where memory interoperability is non-negotiable, the P50448-B21 removes that variable.
Compatibility
This module is designed for HPE server platforms that support DDR5-4800 RDIMM population. Primary targets include HPE ProLiant Gen11 rack and tower servers (DL360 Gen11, DL380 Gen11, ML350 Gen11 and related) as well as compatible Synergy compute modules that specify PC5-4800B-R RDIMM support. Always cross-reference the HPE Memory Configurator or the specific server's QuickSpecs before ordering — Gen10/Gen10 Plus platforms use DDR4 and are not compatible with this DDR5 module. Mixing RDIMM ranks and organizations within a memory channel can also reduce operating frequency; consult the server's memory population rules to maintain rated 4800 MT/s throughput. For large-scale NVR and storage server deployments requiring high memory bandwidth, pairing this kit correctly across all channels is the straightforward path to full performance.
Installation Notes
Install into DIMM slots in the order specified by the server's memory population guide — HPE Gen11 systems typically require slots A1/B1 to be populated first before expanding. Handle modules by the edges; avoid contact with gold contacts. Ground yourself before handling. DDR5 RDIMMs are keyed and insert in one orientation only — no force required for correct alignment. After installation, confirm the iLO management interface recognizes all installed capacity and reports no memory errors before returning the system to production.
