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.
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.