HPE P31373-001 Optane 200 128GB DDR4 Memory

HPE P31373-001 Intel Optane Persistent Memory 200 Series 128GB Module

The HPE P31373-001 is not an ordinary memory stick. It is a 128GB Intel Optane persistent memory module from the 200 series, built in the standard 288-pin DIMM shape but using 3D XPoint media instead of DRAM. That means it can hold data through a power cycle when configured for it, or act as a large, lower-cost block of system memory alongside conventional RDIMMs or LRDIMMs.

P31373-001 is the HPE spare part number. The matching option kit that HPE sold through its configurators is P23532-B21, described by HPE as Intel Optane 128GB persistent memory 200 Series for HPE. The module was designed for HPE ProLiant and Synergy Gen10 Plus systems running selected 3rd Generation Intel Xeon Scalable processors.

We list this part in New and Refurbished condition, subject to stock. Pick the condition you want on this page to see the price and the details that apply to it.

Key Features At A Glance

• 128GB of Intel Optane persistent memory in a single DIMM slot
• Runs in Memory Mode for large memory footprints or App Direct mode for persistent, byte addressable storage
• Sits in a normal DDR4 memory slot next to standard registered or load reduced DIMMs
• Spare number for the P23532-B21 option kit
• Aimed at Gen10 Plus servers with supported 3rd Gen Xeon Scalable processors
• Available New or Refurbished, subject to stock

What Makes Optane Persistent Memory Different From DRAM

A standard DDR4 RDIMM loses its contents the moment power is removed. Intel Optane persistent memory uses a different media type, so it can keep data when the server is switched off, provided the operating system and application are set up for App Direct mode. In Memory Mode the picture changes: the Optane modules provide the main memory capacity seen by the operating system, and the DRAM DIMMs in the server act as a cache in front of them. In that mode data is not treated as persistent.

Because of this, P31373-001 is never a direct replacement for a DDR4 RDIMM of the same size. It only works in platforms that HPE validated for the 200 series, and it always needs DRAM installed alongside it. If you are replacing a failed module, check that the label shows P31373-001 or the P23532-B21 option number before ordering.

Processor And Population Rules

HPE QuickSpecs for Gen10 Plus servers limit the 200 series to selected 3rd Generation Intel Xeon Scalable processors. The DL360 Gen10 Plus documents list Gold 6300 and Platinum 8300 series processors, and the DL380 Gen10 Plus documents also mention some Gold 5300 models, so check your exact CPU against your server’s QuickSpecs. The earlier Optane 100 series used in Gen10 servers with 2nd Gen Xeon Scalable processors is a different product and does not swap with this one.

On the DL380 Gen10 Plus, HPE sets these rules:

• Up to 8 persistent memory modules with one processor and up to 16 with two processors
• Persistent memory can be paired with RDIMMs or LRDIMMs, but the DDR4 DIMMs must all share the same type, capacity and rank
• Only one persistent memory capacity is allowed per server, so 128GB modules cannot be mixed with 256GB or 512GB modules
• Single rank x8 DDR4 3200AA kits cannot be combined with persistent memory
• Specific DRAM counts apply, for example one module needs 6 or 8 DIMMs on a single processor system
• The maximum performance fan kit is required on most DL380 Gen10 Plus models when persistent memory is fitted

Other platforms have their own tables, so follow the population guide for your server model.

New P31373-001 Modules

New stock is supplied unused. The condition and any warranty that applies are shown when you select the New option on this page.

Refurbished P31373-001 Modules

Refurbished modules are previously used parts offered at a lower price. Select the Refurbished option to see the condition details and warranty shown for that choice.

P31373-001 Technical Specifications

Servers That Use This Module

HPE documentation lists the 200 series persistent memory for these rack servers, and specialist resellers also name some Synergy 480 Gen10 Plus and Edgeline configurations:

• HPE ProLiant DL380 Gen10 Plus
• HPE ProLiant DL360 Gen10 Plus

It is not intended for Gen10 servers, which use the Optane 100 series, or for Gen11 servers, which move to DDR5 memory. If your system is not listed above, send us the model and serial number and we will check it.

Related Memory And Parts

Persistent memory always runs alongside DRAM, so you may also need standard DDR4 3200 modules:

• HPE P06033-B21 32GB DDR4 3200 registered memory kit
• HPE P07650-B21 64GB DDR4 3200 memory
• HPE P06031-B21 16GB DDR4 3200 memory kit
• HPE P21674-001 32GB DDR4 3200 spare memory module
• HPE P14608-B21 high performance fan kit

You can also browse our server memory kit range or the full HPE parts catalogue.

How To Check You Have The Right Part

• Look for P31373-001 or P23532-B21 on the module label
• Confirm the label says Optane or PMem and shows 128GB
• Check the server is a Gen10 Plus model with a supported 3rd Gen Xeon Scalable processor
• Match the capacity of any persistent memory modules already fitted
• Review the DRAM count and type against your server’s population table

Buying P31373-001 In The UK

Euroland IT Store supplies HPE server memory to businesses across the UK, and delivery options are shown at checkout. If you are unsure whether persistent memory will work in your system, contact us with the server model, serial number and the details printed on your current module labels, and we will help you confirm the fit before you order.

Frequently Asked Questions

Can I use the P31373-001 in place of a 128GB DDR4 RDIMM?

No. It is an Intel Optane persistent memory module, not DRAM. It needs a supported Gen10 Plus server and processor, and it must be installed alongside standard DDR4 RDIMMs or LRDIMMs.

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

P23532-B21 is the HPE option kit number used when buying the module as an upgrade. P31373-001 is the spare part number usually printed on the module and used for replacements. Both refer to the 128GB Optane 200 series module.

Will this module work in an HPE Gen10 or Gen11 server?

It is designed for Gen10 Plus systems with selected 3rd Gen Intel Xeon Scalable processors. Gen10 servers used the Optane 100 series and Gen11 servers use DDR5, so neither is a match for this part.

Is warranty included with New and Refurbished modules?

The condition and any warranty for this listing are shown when you choose the New or Refurbished option on the product page.

Do you ship this persistent memory module within the UK?

Yes, we deliver across the UK, and the available delivery options are shown at checkout.