HP 128GB 3200MHz DDR4 PC4-25600 ECC Registered CL22 288-Pin DIMM Optane Persistent Memory Module – P31373-001

HPE P31373-001 128GB Intel Optane Persistent Memory 200 Series — DDR-T NVDIMM

The HPE P31373-001 is a 128GB Intel Optane Persistent Memory 200 Series module (PMem 200) — the HPE factory/OEM variant of P23532-B21 — providing byte-addressable non-volatile memory at near-DRAM bandwidth for HPE ProLiant Gen10 Plus servers with Intel Xeon Scalable 3rd Gen (Ice Lake) processors. Functionally identical to P23532-B21, enabling terabyte-scale in-memory capacity and persistent data tiers.

Key Features

• 128GB Intel Optane PMem 200 — factory/OEM (-001) variant of P23532-B21 option kit
• Non-volatile byte-addressable memory using Intel 3D XPoint technology
• Memory Mode and App Direct Mode for flexible volatile or persistent memory deployment
• DDR-T at 3200MHz for near-DRAM bandwidth with data persistence across power cycles
• HPE-certified for ProLiant Gen10 Plus with Intel Xeon Scalable 3rd Gen (Ice Lake)

Product Specifications

• Part Number: P31373-001
• Manufacturer: HP / HPE (Intel Optane PMem 200)
• Capacity: 128GB
• Type: Intel Optane Persistent Memory 200 (DDR-T NVDIMM)
• Speed: 3200MHz (PC4-25600 equivalent DDR-T)
• CAS Latency: CL22 (DDR-T equivalent)
• Interface: 288-Pin DDR4 slot (DDR-T)
• Persistence: Yes — non-volatile in App Direct Mode

Memory Specifications

• Memory Technology: Intel 3D XPoint (non-volatile)
• Operating Modes: Memory Mode (volatile), App Direct Mode (persistent), Mixed Mode
• Form Factor: DIMM (288-pin, DDR-T, requires DDR4 slot)
• Data Persistence: Yes — data survives power loss in App Direct Mode
• ECC: Yes — ECC protected

Performance Specifications

• Read Bandwidth: Up to ~36.8 GB/s (Memory Mode, per module)
• Write Bandwidth: Up to ~12.8 GB/s (Memory Mode, per module)
• Latency: Higher than DRAM (~300ns vs. ~80ns for DDR4)
• IOPS: Optimized for sequential and large-block I/O patterns

Use Cases

• OEM factory procurement of 128GB Optane PMem 200 for HPE Gen10 Plus server builds
• SAP HANA and large in-memory database deployments requiring terabyte-scale capacity
• App Direct Mode persistent memory tier for databases requiring power-loss data retention
• Interchangeable with P23532-B21 in supported HPE ProLiant Gen10 Plus servers

Compatibility

• HPE ProLiant Gen10 Plus with Intel Xeon Scalable 3rd Gen (Ice Lake) processors only
• Requires DDR4 DIMM slots paired with DRAM per Intel”s recommended DRAM:PMem ratio
• Not compatible with AMD EPYC processors or Gen10 Cascade Lake servers
• Functionally identical to P23532-B21 — both interchangeable in supported Gen10 Plus servers

Frequently Asked Questions

What is the difference between P31373-001 and P23532-B21?

Both are identical 128GB Intel Optane Persistent Memory 200 modules for HPE ProLiant Gen10 Plus with Ice Lake processors. P31373-001 is the HPE factory/OEM (-001) variant, while P23532-B21 is the standard HPE option kit (-B21) for channel ordering. Both are fully interchangeable in supported HPE Gen10 Plus servers.

Does Optane PMem 200 require special BIOS or firmware on HPE Gen10 Plus servers?

Yes — HPE ProLiant Gen10 Plus servers require updated BIOS/UEFI and iLO firmware to support Intel Optane PMem 200. HPE”s Service Pack for ProLiant (SPP) includes the necessary firmware updates. Additionally, the OS must support NVDIMM namespaces and DAX (Direct Access) file systems for App Direct Mode — Linux (kernel 4.x+) and Windows Server 2019/2022 include native Optane PMem support.

How does Optane PMem 200 compare to standard DDR4 LRDIMM for SAP HANA?

Optane PMem 200 enables far greater memory capacity per server than DDR4 LRDIMM alone — for example, combining DRAM and PMem in Memory Mode can exceed the DRAM-only maximum. However, PMem has higher latency (~300ns) versus DDR4 DRAM (~80ns). SAP HANA is PMem-certified and uses PMem to extend in-memory capacity for column store data, while keeping hot row store data in DRAM for latency-sensitive operations.

The HPE P31373-001 delivers 128GB of Intel Optane Persistent Memory 200 byte-addressable non-volatile capacity as the OEM factory variant of P23532-B21 — providing the same PMem 200 capabilities for HPE ProLiant Gen10 Plus Ice Lake server configurations requiring terabyte-scale in-memory capacity, data persistence, and near-DRAM bandwidth for SAP HANA and large in-memory database deployments.