HPE 32GB Dual Rank x8 DDR5-4800 CAS-40-39-39 Unbuffered Memory Module

The HPE P64339-B21 is a 32 GB DDR5 memory module designed specifically for HPE ProLiant and other compatible HPE Compute platforms. It uses an unbuffered UDIMM design with a dual rank x8 layout and works at 4800 MT/s. That speed lets everyday server tasks—such as file serving, virtualization, and small database workloads—move data quickly, so the processor spends less time waiting and more time getting work done.

Because the module operates at only 1.2 V, it helps keep power draw and heat generation in check, which is important when you are running a server around the clock in a data closet, branch office, or lab environment. A CAS latency of 40-39-39 ensures reliable timing that matches typical entry level and mainstream server requirements.

HPE tests each P64339-B21 module for full compatibility with its designated platforms, so installation is straightforward and trouble-free. If you are expanding memory to support additional virtual machines, adding headroom for data analytics, or simply replacing an aging DIMM, this module provides a cost-effective path to higher performance without compromising stability.

For IT teams in small businesses, departments, or edge locations, the module offers an easy upgrade path that balances speed, capacity, and efficiency. It lets you extend the useful life of existing HPE servers while keeping your budgets under control.

Highlights:

• 32 GB unbuffered UDIMM that fits HPE Compute Mainstream Platforms
• DDR5 technology that delivers 4800 MT/s data transfer rate
• Dual rank x8 organization for balanced performance and capacity
• Operates at 1.2 V to support energy-efficient server builds
• CAS latency 40-39-39 for stable timing and reliable throughput
• 288-pin DIMM form factor for quick, tool-free installation
• Factory-tested by HPE to ensure compatibility and dependable operation