This item, 726720-B21, is the HPE option part number for the product described as 16GB (1 x 16GB) Dual Rank x4 DDR4-2133 CAS-15-15-15 Load Reduced Memory Kit. Further details below.
Upgrade your Gen9 HPE servers with the 726720-B21 HPE 16GB (1 x 16GB) Dual Rank x4 DDR4-2133 CAS-15-15-15 Load Reduced Memory Kit. This reliable memory solution features ECC for data integrity and a load-reduced configuration to optimize performance. Designed specifically for Gen9 servers, this LRDIMM module boosts speeds up to 2133 MHz, ensuring seamless operation and enhanced productivity.
HPE Option Part #: 726720-B21
HPE Spare Part #: 774173-001
HPE Assembly Part #: 752371-081
PRODUCT SPECIFICATIONS FOR 726720-B21:
- CAS Latency: CL15
- Chips Organization: X4
- Data Integrity Check: ECC
- Form Factor: LRDIMM 288-pin
- Latency Timings: 15-15-15
- Memory Specification Compliance: PC4-17000
- Memory Speed: 2133 MHz
- RAM Features: Dual Rank , Sixteen banks
- Registered or Buffered: Load-Reduced
- Storage Capacity: 16 GB
- Supply Voltage: 1.2 V
- Technology: DDR4 SDRAM
- Type: DRAM
- Upgrade Type: System specific
- Dimensions: 3.5 x 5.5 x 0.2 inches
- Weight: 1 ounces
COMPATIBLE WITH:
PROLIANT BL SERIES
PROLIANT DL SERIES
PROLIANT ML SERIES
** This list may not be complete. Contact us via Live Chat if you have any questions about compatibility.
FREQUENTLY ASKED QUESTIONS FOR 726720-B21:
- Which servers are compatible with the 726720-B21?
The 726720-B21 is compatible with HPE ProLiant Gen9 servers, including BL460c, DL120, DL160, DL180, DL388, DL60, DL80, ML150, and ML350 models. - What is the benefit of ECC in the 726720-B21?
ECC in the 726720-B21 helps prevent data corruption, ensuring reliable and smooth operation for your critical applications. - How does the 726720-B21 improve server performance?
With a speed of 2133 MHz and dual rank x4 configuration, the 726720-B21 increases data transfer rates and overall system efficiency.
HPE PARTSURFER INFO FOR 726720-B21
| Spare PN | Description | |
|---|---|---|
 | 774173-001 | 16GB, 2133MHz, PC4-2133P-L, DDR4, dual-rank x4, 1.20V, CAS-15-15-15, load reduced dual in-line memory module (LRDIMM) |
Last Updated: 2026-04-10
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This product is warrantied against hardware failure for a period of 5 Years from the date of purchase. Before making a purchase, please take a moment to review our return policy below.
Returns
It is the customer's responsibility to verify compatibility with their machine(s) before placing an order. If an item is ordered by mistake, it can be returned for refund, minus a 25% restocking fee, within 5 business days of receipt. The cost of freight is not refundable.
Please be aware that factory-sealed equipment can only be returned if it remains unopened.
Defective Products
If you have received a defective part and your machine is still within the HPE warranty period, please initiate a warranty exchange by visiting the HPE Enterprise Support Center. Be sure to have the serial numbers of the defective drive and your server/storage array handy.
In case your hardware becomes defective during the Global One warranty period, but the HPE warranty has expired, you can return the product to us for a working replacement. You are responsible for the shipment of returned merchandise. However, we will cover the expense of Ground /Economy shipment for the replacement item(s).
Requesting an RMA
To initiate a return or warranty claim, please complete and submit the RMA Request Form.
