P43328-B21 is the HPE option part number for 32GB Dual Rank x8 DDR5-4800 CAS-40-39-39 EC8 Registered Smart Memory for Gen11 servers. It is a 288-pin DDR5 registered DIMM running at 4800 MHz (PC5-38400) with CAS latency timings of 40-39-39, x8 chip organization, dual rank construction and ECC data integrity checking, operating at 1.1 V. This is a system-specific upgrade validated for HPE Gen11 platforms with 4th generation processors, including the DL110, DL320, DL360, DL380, DL380a and DL560 rack servers, the ML110 and ML350 tower servers, and Synergy 480 Gen11 compute modules. Use it when populating channels to a documented memory configuration.
HPE Option Part #: P43328-B21
HPE Spare Part #: P48501-001
HPE Assembly Part #: P43330-0A1
PRODUCT SPECIFICATIONS FOR P43328-B21:
- Capacity: 32 GB
- Upgrade Type: System specific
- OEM Manufacturer Equivalent Part Number: HPE P43328-B21
- Width: 7.5 in
- Depth: 0.8 in
- Height: 3.5 in
- Weight: 1.41 oz
- Type: DRAM memory module
- Technology: DDR5 SDRAM
- Form Factor: DIMM 288-pin
- Speed: 4800 MHz (PC5-38400)
- Latency Timings: CL40 (40-39-39)
- Data Integrity Check: ECC
- Features: Dual Rank, registered
- Chips Organization: X8
- Voltage: 1.1 V
RESOURCES FOR P43328-B21
Quickspecs for P43328-B21COMPATIBLE WITH:
PROLIANT DL SERIES
PROLIANT ML SERIES
PROLIANT SYNERGY SERIES
** This list may not be complete. Contact us via Live Chat if you have any questions about compatibility.
FREQUENTLY ASKED QUESTIONS ABOUT P43328-B21
What is the difference between P43328-B21 and P48501-001?
They are the same physical memory module under different HPE numbering schemes. This page, P43328-B21, is the option part number, the orderable number used when configuring or adding memory to a server. P48501-001 is the spare part number, used for service replacement of an installed module. This family also includes one assembly revision, and all related numbers appear in the cross-reference block on this page. An assembly part number identifies a specific build or revision level of the module as manufactured.
Which servers accept this module?
It is a system-specific upgrade for HPE Gen11 servers using 4th generation processors: DL110 Gen11, DL320 Gen11, DL360 Gen11, DL380 Gen11, DL380a Gen11, DL560 Gen11, ML110 Gen11, ML350 Gen11 and Synergy 480 Gen11. Because it is registered DDR5 Smart Memory, it is not interchangeable with memory for earlier server generations. Confirm the target platform is on this list before ordering to a configuration.
What are the full electrical and timing specifications?
The module is DDR5 SDRAM in a 288-pin DIMM form factor with 32 GB capacity. Rated speed is 4800 MHz, corresponding to PC5-38400. Latency timings are CL40 (40-39-39). The chip organization is x8, the module is dual rank and registered, and it includes ECC for data integrity checking. Operating voltage is 1.1 V. Physical dimensions are 7.5 in wide, 0.8 in deep and 3.5 in high, with a weight of 1.41 oz.
What does dual rank x8 registered mean for a configuration?
Dual rank describes two accessible ranks of DRAM on the module, and x8 describes the data width organization of the DRAM devices. Registered means the module includes a register that buffers address and command signals between the memory controller and the DRAM devices, which is standard for server memory. These characteristics matter when matching modules across channels, so populate a system with modules of the same type and specification.
Does this module provide error correction?
Yes. It includes ECC data integrity checking, which is standard for HPE Smart Memory used in Gen11 servers. ECC allows the memory subsystem to detect and correct certain memory errors rather than passing corrupted data to the system, which is the expected configuration for production server workloads on the supported DL, ML and Synergy Gen11 platforms listed for this part.
HPE PARTSURFER INFO FOR P43328-B21
| Spare PN | Description | |
|---|---|---|
 | P48501-001 | SPS-DIMM,32GB PC5-4800B-R,2Gx8 |
Last Updated: 2026-10-08
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- Memory Capacity
- 32GB
- Memory Rank
- Dual Rank
- Memory Speed
- 4800 MHz
- Memory Type
- DDR5
2 Reviews
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
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