HPE 752372-081 32GB PC4-17000 DDR4 Memory

HPE 752372-081 32GB DDR4-2133 Load Reduced Memory for ProLiant Gen9

HPE 752372-081 is a 32GB DDR4 load reduced DIMM (LRDIMM) for HPE ProLiant Gen9 servers. The module is quad rank x4, rated PC4-2133P-L, which means DDR4-2133 (PC4-17000) with CAS latency 15, ECC and the standard DDR4 voltage of 1.2V.

This memory is aimed at Gen9 servers that need a lot of RAM per processor, such as virtualisation hosts and in-memory database servers. The 752372-081 code is the assembly number, the one usually printed on the module label, which makes it the easiest number to match when replacing a DIMM.

Through Euroland IT Store the 752372-081 is available in New and Refurbished condition, always subject to stock on the day.

HPE 752372-081 Technical Specifications

What Is The HPE 752372-081?

HPE uses three numbers for this module. 726722-B21 is the option kit that resellers sell as an upgrade. 774174-001 is the service spare. 752372-081 is the assembly code on the DIMM itself. All three refer to the same 32GB quad rank LRDIMM.

The exact number matters because HPE also made a 32GB DDR4-2133 registered DIMM. It has the same capacity and speed but a different buffer design, and the two types cannot share a server. Matching the assembly number avoids that mistake.

What Load Reduced Means

A standard registered DIMM buffers only the address and command lines. An LRDIMM adds buffering for the data lines too. To the memory controller, each LRDIMM looks like a lighter electrical load, so it can drive more ranks per channel without dropping speed as sharply.

That matters with quad rank modules. Four ranks on one DIMM would normally strain a channel. The load reduction lets Gen9 servers fit several of these 32GB modules on each channel and still reach large totals. The trade-off is a little more latency and a higher price per gigabyte than an RDIMM of the same size.

The key population rule is simple: do not mix LRDIMMs and RDIMMs in the same server. Choose one type for the whole machine. Within LRDIMMs, HPE recommends identical modules per channel for the best results.

New HPE 752372-081

New modules are best for capacity projects where you want every DIMM unused and identical. They also fit environments under strict purchasing rules. The product page lists the warranty on new units.

Refurbished HPE 752372-081

Gen9 servers remain common in UK data rooms, and a Refurbished 752372-081 is a cost-effective way to replace a failed DIMM or add capacity to them. The refurbished condition and warranty are set out on the product page.

Compatible Servers

• HPE ProLiant DL380 Gen9
• HPE ProLiant DL160 Gen9 and DL180 Gen9
• HPE ProLiant ML350 Gen9
• HPE ProLiant ML150 Gen9
• HPE ProLiant BL460c Gen9

Check your server model and the label on a fitted DIMM before buying. Gen9 servers using Xeon E5-2600 v3 processors run memory at up to 2133, which suits this module. In a v4 system the module still runs at its rated 2133 speed.

Matching And Related Part Numbers

• HPE 726722-B21 is the option kit number for this 32GB LRDIMM.
• HPE 774174-001 is the spare part number for the same module.
• HPE 726724-B21 64GB PC4-17000P-L memory is a larger load reduced module at the same speed, by its title.
• HPE 752373-091 64GB PC4-17000P-L memory is another 64GB load reduced listing.
• HPE 728629-B21 32GB DDR4-2133 memory is a 32GB DDR4-2133 kit listed separately; check its buffer type before mixing.
• HPE 726719-B21 16GB DDR4-2133 memory is a 16GB module in the same speed grade.

Confirming The Right Module

1. Read an installed DIMM label for 752372-081, 774174-001, 726722-B21 or 32GB 4Rx4 PC4-2133P-L.
2. Check the L at the end of the speed code, which marks an LRDIMM. An R means registered.
3. Confirm the server is a Gen9 model.
4. Make sure no RDIMMs are fitted alongside, as the two types cannot be mixed.
5. Follow the slot population order printed in the server user guide or on the access panel label.

Scaling Memory On A Gen9 Host

If you are growing a virtualisation cluster, plan capacity per processor rather than per server. Each Gen9 processor has four memory channels. Filling them evenly with 32GB LRDIMMs keeps bandwidth balanced and lets the hypervisor place virtual machines close to their memory. Mixing capacities is allowed in many cases but often costs performance, so buying matched sets is usually the better plan.

Buying HPE 752372-081 in the UK

Euroland IT Store works with businesses, IT teams, resellers and repairers in every part of the UK. The product page shows the condition, warranty, stock and delivery information for this DIMM. Delivery is free to the UK mainland for orders above £100 + VAT. Tell our team your server model and the numbers on your current memory and we will check the match, or call 0203 209 6002.

Frequently Asked Questions

Is HPE 752372-081 an LRDIMM or an RDIMM?

It is a load reduced DIMM, marked PC4-2133P-L, so it must not be mixed with registered DIMMs in the same server.

Which Gen9 servers is the 752372-081 compatible with?

It is listed for ProLiant Gen9 servers including the DL380, DL160, DL180, ML350, ML150 and BL460c Gen9.

Is a Refurbished module a good option?

Refurbished is a sensible lower cost option for repairs and upgrades, while New suits buyers who need unused parts.

How long is the warranty?

The warranty depends on the condition you choose and is shown on the product page.

Do you deliver memory free in the UK?

Orders over £100 + VAT ship free to the UK mainland, and the product page gives delivery details for this module.