P64706-B21 - HPE 32GB DDR5 2Rx8 PC5-5600-R Smart Memory Kit

HPE P64706-B21 — 32GB (1×32GB) DDR5-5600 Registered ECC Smart Memory Kit (Gen11)

What it is

P64706-B21 is an HPE Smart Memory RDIMM for ProLiant Gen11 servers.
It’s a 32GB DDR5 Registered ECC module running at 5600 MT/s, built and qualified by HPE for Gen11 platforms. Think “the standard 32GB high-speed DDR5 stick you add to DL360/DL380/ML350 Gen11 and similar systems when you want more RAM without drama.”

Why buyers pick P64706-B21 (plain English)

• Gen11-certified compatibility
  HPE Smart Memory is validated for ProLiant Gen11, so you avoid boot/BIOS surprises.

• Higher DDR5 speed tier
  5600 MT/s helps memory-sensitive workloads and improves overall host responsiveness.

• Server-grade reliability
  RDIMM + ECC is the uptime-friendly choice for 24×7 environments.

• Clean scaling step
  32GB per slot is a practical building block for virtualization and general compute growth.

60-second spec box (P64706-B21)

Capacity

• 32 GB

Module type

• DDR5 RDIMM (Registered DIMM)

Speed / standard

• DDR5-5600 (PC5-44800 class)

Rank / organization

• Dual Rank (2R×8)

ECC / reliability

• ECC Registered (enterprise/server grade)

Voltage

• 1.1V

Pins / form factor

• 288-pin DIMM

Target platforms

• HPE ProLiant Gen11 (and other HPE systems that specify DDR5-5600 RDIMM Smart Memory)

Where it fits (and when to choose something else)

Perfect for:

• Expanding RAM in Gen11 ProLiant servers

• Virtualization hosts, databases, analytics, and general enterprise compute

• Standard memory upgrades where you want HPE-qualified DDR5 at 5600 MT/s

Choose something else if:

• Your server requires LRDIMMs instead of RDIMMs

• You need different capacity steps → 16GB / 64GB / 128GB DDR5 RDIMMs

• You’re on Gen10/Gen10+ (DDR4 platform) → use DDR4 Smart Memory instead

TL;DR

P64706-B21 is HPE’s 32GB DDR5-5600 ECC Registered Smart Memory RDIMM for Gen11 servers: a fast, dependable, platform-qualified 32GB stick for scaling ProLiant Gen11 memory cleanly.