• HPE P64709-B21 128GB DDR5-5600 RDIMM green circuit board with gold contacts
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HPE

HPE P64986-B21 | 64GB DDR5-6400 RDIMM, 2Rx4, ECC Registered, CAS 52-52-52

P64986-B21

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Description

Server‑grade DDR5 RDIMM providing 64GB per module at DDR5‑6400 speeds for balanced capacity and bandwidth. ECC Registered buffering enhances signal integrity and platform stability for virtualization, databases, and HPC workloads on supported DDR5 server platforms.

Features

High bandwidth DDR5‑6400 for modern workloads
- ECC Registered design for improved reliability
- 2Rx4 layout for strong performance compatibility
- Optimized for multi‑channel server memory architectures

Warranty

All products sold by XS Network Tech include a 12-month warranty on both new and used items. Our in-house technical team thoroughly tests used hardware prior to sale to ensure enterprise-grade reliability.

All technical data should be verified on the manufacturer data sheets.

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Technical Specifications

FAQs

Technical Specifications

Capacity: 64GB (1 x 64GB)
- Memory type: DDR5 RDIMM (Registered, ECC)
- Data rate: DDR5‑6400 MT/s
- Timings: CAS 52‑52‑52
- Rank/width: 2Rx4
- Voltage: 1.1V nominal
- Module pins: 288‑pin RDIMM
- Platform: Server/Workstation DDR5 RDIMM (not compatible with UDIMM/SO‑DIMM slots)

FAQs

Q: Is this compatible with desktop motherboards?
A: No. It is an ECC Registered RDIMM for servers/workstations that require DDR5 RDIMMs.

Q: Can I mix 64GB with 128GB modules?
A: Many platforms allow mixing capacities when following channel population rules; performance may align to the slowest/common configuration.

Q: What happens if modules of different speeds are installed?
A: The memory subsystem will run at the lowest common speed supported by all modules and the platform.

Q: Do I need to populate specific slots first?
A: Follow the server’s memory population guidelines to balance channels and achieve optimal performance.

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