Brand: HPE | Category: Memory (RAM)
SKU: P64337-B21 | Part #: P64337-B21 | MPN: P64337-B21
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The HPE 128GB (1x128GB) DDR5-5600 CAS-46 EC8 Registered Smart Memory Kit (P64337-B21) represents a significant step forward in enterprise memory architecture, leveraging the DDR5 generation to deliver higher bandwidth, improved power efficiency, and greater per-DIMM capacity compared to prior DDR4 platforms. Operating at 5600 MT/s with a CAS latency of 46, this Registered DIMM (RDIMM) is engineered for HPE ProLiant Gen11 servers and HPE Alletra platforms, where it integrates with HPE's Smart Memory technology to enable server-level recognition, firmware validation, and optimized memory subsystem configuration.
As an EC8 (Error Correction Code 8) module, this kit goes beyond standard ECC to provide enhanced reliability through additional symbol-based correction capabilities, making it well-suited for environments where data integrity under sustained, high-throughput workloads is non-negotiable. HPE Smart Memory identification allows the host server's BIOS and management firmware to authenticate and tune the module automatically, reducing configuration risk in large-scale deployments and ensuring full support within HPE's Integrated Lights-Out (iLO) management ecosystem.
With 128 GB of capacity in a single DIMM, this kit enables administrators to build high-density memory configurations without maximizing DIMM slot count, preserving available slots for future scale-out. This makes it a strategic choice for memory-intensive enterprise workloads including in-memory databases, large language model inference, real-time analytics, and virtualization hosts requiring large per-VM memory allocations. The module ships as a 1x128GB kit, allowing incremental or symmetric population across multi-socket HPE server platforms.
| Manufacturer | HPE |
| Manufacturer Part Number | P64337-B21 |
| Module Description | HPE 128GB (1x128GB) DDR5-5600 CAS-46 EC8 Registered Smart Memory Kit |
| Capacity | 128 GB |
| Kit Configuration | 1x 128 GB |
| Memory Technology | DDR5 |
| Memory Speed | 5600 MT/s |
| CAS Latency | 46 (CL46) |
| Module Type | RDIMM (Registered DIMM) |
| Error Correction | EC8 (Enhanced Correction 8-symbol) ECC |
| Smart Memory | Yes — HPE Smart Memory with server-level identification and firmware validation |
| Form Factor | 288-pin DIMM |
| Voltage | 1.1 V |
| ECC Support | Yes |
| Compatible Server Families | HPE ProLiant Gen11 (select models), HPE Alletra MP |
| Rank | Quad Rank (4R) |
| Operating Temperature | 0°C to 85°C (standard DIMM operating range) |
Available from Omnixon Global. Submit an RFQ and our team will confirm configuration and availability for your order.
| Brand | HPE |
| Category | Memory (RAM) |
| SKU | P64337-B21 |
| Part Number | P64337-B21 |
| Condition | New |
| Manufacturer Part Number | P64337-B21 |
| Module Description | HPE 128GB (1x128GB) DDR5-5600 CAS-46 EC8 Registered Smart Memory Kit |
| Capacity | 128 GB |
| Kit Configuration | 1x 128 GB |
| Memory Technology | DDR5 |
| Memory Speed | 5600 MT/s |
| CAS Latency | 46 (CL46) |
| Module Type | RDIMM (Registered DIMM) |
| Error Correction | EC8 (Enhanced Correction 8-symbol) ECC |
| Smart Memory | Yes — HPE Smart Memory with server-level identification and firmware validation |
| Form Factor | 288-pin DIMM |
| Voltage | 1.1 V |
| ECC Support | Yes |
| Compatible Server Families | HPE ProLiant Gen11 (select models), HPE Alletra MP |
| Rank | Quad Rank (4R) |
| Operating Temperature | 0°C to 85°C (standard DIMM operating range) |
Part number P64337-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.
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.