HPE 8GB (1x8GB) Single Rank x8 DDR4-2666 CAS-19-19-19 Registered Smart Memory Kit
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Part number cross-reference
- Part number
- 840755-191
Overview
This item, 840755-191, is the HPE assembly number for the product described as 8GB (1x8GB) Single Rank x8 DDR4-2666 CAS-19-19-19 Registered Smart Memory Kit. Further details below.
Upgrade your Gen10 server with this 8GB DDR4-2666 Registered Smart Memory Kit, designed to improve performance and responsiveness. This memory module enhances your system's ability to handle multiple tasks efficiently, making it suitable for a range of server applications. With a speed of 2666 MHz and CAS Latency timings of 19-19-19, this memory ensures quick and reliable data access.
This 8GB memory module is designed for easy installation and optimal compatibility with Gen10 servers. Built with ECC data integrity for enhanced stability and featuring a single-rank configuration, this memory kit provides a dependable solution for your server's memory needs. Compatible servers include, but are not limited to, Gen10 servers.
HPE Option Part #: 838079-B21
HPE Spare Part #: 868841-001
HPE Assembly Part #: 840755-191
PRODUCT SPECIFICATIONS FOR 840755-191:
- Capacity: 8 GB
- Upgrade Type: System specific
- OEM Manufacturer Equivalent Part Number: HP 838079-B21, HP 868841-001
- Type: DRAM memory module
- Technology: DDR4 SDRAM
- Form Factor: DIMM 288-pin
- Speed: 2666 MHz (PC4-21300)
- Latency Timings: CL19 (19-19-19)
- Data Integrity Check: ECC
- Features: Single Rank, registered
- Module Configuration: 1024 X 72
- Chips Organization: X8
- Voltage: 1.2 V
COMPATIBLE WITH:
OTHER HPE MACHINES
** This list may not be complete. Contact us via Live Chat if you have any questions about compatibility.
HPE PARTSURFER INFO FOR 840755-191 (838079-B21)
| Spare PN | Description | |
|---|---|---|
 | 868841-001 | 8GB PC4-2666V-R, synchronous dynamic random access memory (SDRAM),dual data rate(DDR4) mode, dual in-line memory module (DIMM), organized as 1Gx72 |
Last Updated: 2026-05-31
Other sizes in this family
| Part number | Capacity | Type | Rank | Price | Availability |
|---|
Working out how many you need? Each server's memory page counts the modules for the capacity you want: see Compatible servers.
Specifications
Compatible servers
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Part numbers
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Questions about 840755-191
Warranty and returns
5-year replacement warranty
Covered against hardware failure for 5 years from the date of purchase. While HPE's own warranty runs, HPE replaces a failed part through the HPE Enterprise Support Center. After that, send it back to us for a working replacement; you ship it to us and we pay Ground or Economy shipping on the replacement.
Ordered the wrong part?
It is the customer's responsibility to verify compatibility before ordering. A part ordered by mistake can be returned for a refund, less a 25% restocking fee, within 5 business days of receipt. Freight is not refunded, and factory-sealed items can only be returned unopened. Check Compatible servers before you order.
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840755-191 HPE 8GB (1x8GB) Single Rank x8 DDR4-2666 CAS-19-19-19 Registered Smart Memory Kit
Filling a whole server?
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