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P06031-B21: HPE 16GB (1x16GB) Single Rank x4 DDR4-3200 CAS-22-22-22 Registered Smart Memory Kit

HPE P06031-B21 Memory3200 MT/s
HPEMemory

Also listed as: P07640-001, P03847-001, HMA82GR7DJR8N-XN, M393A2K40DB3-CWE · made by SK hynix

The HPE P06031-B21 is a 16GB single-rank DDR4-3200 ECC registered DIMM kit designed for HPE ProLiant Gen10 Plus servers and AMD EPYC-based platforms. Operating at 3200 MT/s with a standard 1.2V supply, it provides the maximum memory frequency supported by the DDR4 standard, offering low per-DIMM electrical load and high memory bus throughput for high-performance enterprise workloads.

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Specifications

Part numberP06031-B21
BrandHPE
Made bySK hynix
TypeMemory
Other numbersP07640-001, P03847-001, HMA82GR7DJR8N-XN, M393A2K40DB3-CWE
Statuscurrent
Capacity16GB
TypeDDR4-3200 Registered DIMM (RDIMM)
Speed3200 MT/s (PC4-25600)
Voltage1.2V
RankSingle Rank (1Rx4)
Cas latency22-22-22
Generation fitProLiant Gen10 Plus and AMD EPYC Gen10 servers

About the P06031-B21

P06031-B21 provides 16GB of high-speed DDR4-3200 registered ECC memory in a single-rank configuration for HPE ProLiant Gen10 Plus servers. Engineered to support 3rd Generation Intel Xeon Scalable (Ice Lake) and AMD EPYC 7002/7003 series processors, it allows systems to achieve peak DDR4 bandwidth of 25.6 GB/s per channel with enterprise error detection and correction.

Compatibility

Fully validated for HPE ProLiant DL380 Gen10 Plus, DL360 Gen10 Plus, DL385 Gen10 Plus, DL385 Gen10 Plus v2, DL325 Gen10 Plus, DL325 Gen10 Plus v2, DL345 Gen10 Plus, DL365 Gen10 Plus, and Synergy 480 Gen10 Plus compute modules. Also operates at derated speeds in standard Gen10 systems.

How to identify a genuine unit

Standard 288-pin DIMM featuring SK hynix or Samsung DRAM ICs on a high-grade green PCB. Label displays option part number P06031-B21, spare part number P07640-001, and assembly part number P03847-001, accompanied by the genuine HPE security hologram.

Buying used

Inspect all gold connector contact fingers for signs of abrasion, corrosion, or contamination. Verify that the spare part number P07640-001 matches HPE documentation and confirm that the module authenticates successfully under HPE iLO 5 without triggering third-party memory warnings.

Reference prices (last 12 months, updated 2026-10-27)

Used: USD 45 (1 sighting, Oct 2026)

All sightings
SellerConditionPriceNoteSeen
ebay.comusedUSD 45Tested working HPE 16GB 1Rx4 DDR4-3200 RDIMM2026-10-27

Prices seen on public listings on the dates shown, before tax and shipping. Not an offer.

Fits these models

Check compatibility with HPE

Before you buy, confirm the exact configuration against the vendor's own lists: firmware levels, operating systems, adapters and optics that HPE has tested with the HPE P06031-B21.

Equivalent part numbers

FAQ

Can P06031-B21 be installed in standard ProLiant Gen10 Intel servers?

Yes, but it will downclock to the maximum speed supported by the installed processor (2666 MT/s on 1st Gen Xeon or 2933 MT/s on 2nd Gen Xeon).

What is the benefit of single-rank 1Rx4 layout?

Single-rank modules present lower capacitive loading to the processor memory bus, allowing all memory slots to operate at full 3200 MT/s in 1 DPC configurations.

Buying or selling P06031-B21?

New, refurbished or used. Tell us the quantity and condition and we connect you with a vetted reseller in your region, usually within one working day.

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