HPE DDR5 64GB 4800 MT/s RDIMM

Brand: HPE | Category: Memory (RAM)

SKU: 875829-B21 | Part #: 875829-B21 | MPN: 875829-B21

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DDR5 memory at 4800 MT/s operates in a narrow performance window where timing and voltage matter as much as raw speed. The HPE DDR5 64GB 4800 MT/s RDIMM (part number 875829-B21) achieves CL40 latency while drawing just 1.1V—a combination that matters significantly for workloads where memory access patterns dominate execution time. High-frequency trading platforms, in-memory databases like Redis and SAP HANA, and latency-critical analytics engines notice the difference between a well-tuned DDR5 module and an overclocked alternative. HPE's implementation here prioritizes stability and consistency over pushing frequency higher, which is precisely what enterprise infrastructure teams need when predictability outweighs marginal throughput gains.

This module ships as a low-profile registered DIMM in dual-rank configuration (2Rx4), meaning it fits the physical and electrical constraints of HPE ProLiant Gen11 servers built around Intel Xeon Scalable 4th Generation processors. The 288-pin architecture is native to DDR5, and the RDIMM registered buffer ensures signal integrity across the full 64GB capacity when populated in multi-socket configurations. HPE's SmartMemory feature integrates with the ProLiant firmware to enable memory mirroring, spare rank activation, and predictive spare block usage—functionality that data centre operations teams leverage to extend DIMM lifespan and reduce unplanned downtime. The 875829-B21 carries on-die ECC plus RDIMM buffer ECC, providing dual layers of error detection and correction that are non-negotiable in environments where a single bit flip could corrupt production data or trigger a checkpoint restart in a long-running simulation.

Thermal operating range spans 0°C to 85°C, which accommodates both air-cooled and liquid-cooled ProLiant chassis without special conditioning. HPE modules at this specification are RoHS-compliant and built to survive the full lifecycle of a ProLiant Gen11 server—typically four to five years in active data centre duty. Storage architects and infrastructure teams sourcing memory for new Gen11 deployments often start with 64GB per socket to balance cost against capacity, then populate additional 875829-B21 modules if workload profiling shows memory-bound behavior. The part number 875829-B21 itself is widely recognized across HPE's channel partner network, meaning procurement cycles are predictable and spare-part availability remains stable throughout the server's operational life.

HPE DDR5 at this speed and latency profile fits naturally into use cases where memory bandwidth and response time both matter. Genomic analysis platforms performing sequence alignment across large reference databases, financial risk models running Monte Carlo simulations, and machine learning inference engines serving real-time prediction requests all benefit from the consistent sub-40ns memory access that CL40 timing at 4800 MT/s delivers. The 1.1V operating point also keeps power dissipation modest—important when calculating total system power in multi-socket servers where memory power compounds across eight or sixteen sockets. Network engineers managing data centre power distribution budgets factor memory voltage into rack-level planning, and this module's efficiency helps keep per-gigabyte power consumption within expected bounds for modern Xeon infrastructure.

Omnixon Global stocks the HPE DDR5 64GB 4800 MT/s RDIMM (875829-B21) across our UAE and GCC distribution hubs, with standard access to HPE's full memory portfolio for ProLiant Gen11 and adjacent platforms. Whether you are building a new data centre cluster, refreshing existing ProLiant infrastructure, or sourcing spare modules for existing deployments, Omnixon Global provides direct allocation and technical consultation to enterprises, system integrators, and data centre operators. Submit a request for quotation today to confirm availability, pricing, and lead times for your deployment timeline.

Performance Specifications

• Memory Type: DDR5 SDRAM, 4800 MT/s transfer rate with CL40 latency timing
• Capacity and Configuration: 64GB single module, dual-rank (2Rx4) RDIMM layout on 288-pin form factor
• Voltage and Power: 1.1V nominal operating voltage; on-die ECC plus RDIMM registered buffer ECC for dual-layer error correction
• Physical Profile: Low-profile (LP) height to fit standard ProLiant Gen11 server chassis without riser conflicts
• Temperature Range: Rated 0°C to 85°C operational window; RoHS-compliant manufacturing
• HPE SmartMemory: Integrated firmware support for mirroring, spare rank activation, and predictive spare block allocation on Gen11 ProLiant platforms
• Part Number Reference: HPE 875829-B21; compatible with Intel Xeon Scalable 4th Generation processor-based ProLiant servers