Home › Parts › HPE part numbers

726718-B21: HPE 8GB (1x8GB) Single Rank x4 DDR4-2133 CAS-15-15-15 Registered Smart Memory Kit

HPE 726718-B21 Memory2133 MT/s
HPEMemory

Also listed as: 774171-001, 752368-081, M393A1G40DB0-CPB, HMA41GR7MFR8N-TF · made by Samsung

The HPE 726718-B21 is an 8GB single-rank DDR4-2133 ECC registered DIMM kit designed for HPE ProLiant Gen9 servers powered by Intel Xeon E5-2600 v3 and v4 processors. Incorporating HPE SmartMemory authentication and precision timing profiles, it operates at a standard 1.2V to provide energy-efficient and stable memory operation across enterprise workloads.

Buy 726718-B21Sell yours

Specifications

Part number726718-B21
BrandHPE
Made bySamsung
TypeMemory
Other numbers774171-001, 752368-081, M393A1G40DB0-CPB, HMA41GR7MFR8N-TF
Statusend of sale
Capacity8GB
TypeDDR4-2133 Registered DIMM (RDIMM)
Speed2133 MT/s (PC4-17000)
Voltage1.2V
RankSingle Rank (1Rx4)
Cas latency15-15-15
Generation fitProLiant Gen9 servers with Intel Xeon E5-2600 v3/v4 processors

About the 726718-B21

726718-B21 is HPE's 8GB single-rank DDR4-2133 ECC registered DIMM kit designed for ProLiant Gen9 rack, tower, and blade computing systems. Engineered with certified Samsung and SK hynix DRAM components, it features embedded HPE SmartMemory authentication that allows system ROM to optimize signal integrity, trace impedance, and error correction algorithms.

Compatibility

Compatible across HPE ProLiant Gen9 servers supporting DDR4 memory, including DL380 Gen9, DL360 Gen9, DL160 Gen9, DL180 Gen9, DL120 Gen9, DL60 Gen9, DL80 Gen9, DL560 Gen9, DL580 Gen9, ML350 Gen9, ML110 Gen9, ML150 Gen9, Apollo 4200 Gen9, and Synergy 480 Gen9 compute nodes running Intel Xeon E5-2600 v3/v4 CPUs.

How to identify a genuine unit

Standard 288-pin DIMM featuring a dark green circuit board without heat spreader. The central white barcode label displays option part number 726718-B21, spare part number 774171-001, and assembly part number 752368-081, accompanied by the holographic genuine HPE security logo.

Buying used

Inspect the 288 gold edge connector contact pins for scratches, debris, or missing plating. Ensure the module carries the original HPE serial label and barcode. Boot the server and check HPE iLO 4 System Information to confirm that SmartMemory status registers as authentic without memory warnings.

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

Used: USD 12 (1 sighting, Oct 2026)

All sightings
SellerConditionPriceNoteSeen
ebay.comusedUSD 12Tested working HPE 8GB 1Rx4 DDR4-2133 RDIMM with genuine label2026-10-27

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 726718-B21.

Equivalent part numbers

FAQ

What processors support the 726718-B21 module?

Intel Xeon E5-2600 v3 and E5-2600 v4 series processors natively support this DDR4-2133 memory module in ProLiant Gen9 servers.

Can 726718-B21 be mixed with DDR4-2400 modules?

Yes, but mixing with 2400 MT/s modules will force the memory bus to operate at the slower 2133 MT/s speed.

Buying or selling 726718-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.

Buy 726718-B21Sell yours

Sources