• Hpe p72646-b21 amd epyc 9845 5th gen server processor with metallic silver top cover and black integrated circuitry beneath
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HPE

HPE P72646-B21 | AMD EPYC 9845 5th Gen Processor, 160-Core, 2.1GHz, 390W, SP5

HPE P72646-B21 | AMD EPYC 9845 5th Gen Processor, 160-Core, 2.1GHz, 390W, SP5

P72646-B21

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Description

The AMD EPYC 9845 processor for HPE delivers the highest core density in the EPYC 9005 (Turin) family — 160 cores and 320 threads at a 2.1GHz base clock with a 390W TDP — making it the ideal choice for HPC, virtualisation, AI inference, and data-intensive enterprise workloads. Designed for HPE ProLiant Gen11 and Gen12 servers on the SP5 socket, it pairs with DDR5-6400 Smart Memory across up to 12 memory channels per socket, supporting up to 3TB per socket or 6TB in a dual-socket configuration.

Built on a System-on-Chip (SoC) architecture with no external chipset, the EPYC 9845 provides 160 PCIe 5.0 lanes across a dual-socket platform and supports AMD's 3xGMI inter-processor interconnect for low-latency workload scaling. Advanced ECC with single device data correction and configurable TDP (cTDP) allow flexible deployment across high-density and power-managed environments. Note: Performance Heatsink and Performance Fan Kit are required for processors above 240W and are sold separately. Get it now at iptrading.com.au — authentic hardware, reliable service.

Features

- AMD EPYC 5th Generation (Turin) 9005 Series — highest-performing EPYC family to date
- 160 cores / 320 threads — highest core count in the EPYC 9005 family for maximum parallel compute density
- System-on-Chip (SoC) design with no external chipset for reduced latency and improved power efficiency
- PCIe 5.0 support with up to 160 lanes in dual-socket configuration for high-bandwidth I/O expansion
- 3xGMI dual-socket interconnect enabling seamless multi-processor coherency
- DDR5-6400 support across 12 memory channels per socket for extreme memory bandwidth
- Up to 6TB system memory in dual-socket HPE ProLiant servers
- 320MB L3 cache for reduced memory latency on large working-set workloads
- Advanced ECC with Single Device Data Correction (SDDC) for enterprise-grade memory reliability
- Configurable TDP (cTDP) for flexible power and thermal management across deployment environments
- Validated for HPE ProLiant Gen11 and Gen12 server platforms

Warranty

Hewlett Packard Enterprise (HPE) offers a standard limited hardware warranty on its products, with coverage periods varying by product line. For instance, HPE ProLiant servers typically come with a 1 to 3-year limited warranty, while other products may have different durations.
Extended Warranty Options via IP Trading:
IP Trading offers tailored extended warranty solutions and support packages for HPE products, ensuring your IT infrastructure remains protected beyond the standard warranty period. Contact our team to explore options that align with your organisation's needs.

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

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Technical Specifications

FAQs

Technical Specifications

- Cores / Threads: 160 Cores / 320 Threads
- Base Clock: 2.0 GHz | Max Boost: 2.2 GHz
- TDP: 390W (configurable cTDP)
- L3 Cache: 320MB
- Socket: SP5
- Architecture: AMD EPYC 5th Generation (Turin) 9005 Series
- Memory Type: DDR5-6400
- Memory Channels: 12 per processor
- Max Memory per Socket: 3TB (1DPC)
- Max Memory per Server (2S): 6TB
- PCIe Version: PCIe 5.0
- PCIe Lanes: 160 lanes (dual-socket)
- Inter-Processor Interconnect: 3xGMI
- Chipset: None (SoC design)
- Compatible Servers: HPE ProLiant Gen11 and Gen12
- Option Part#: P72646-B21 | Spare Part#: P73257-001
- Heatsink / Fan Kit: Not included — Performance Heatsink and Performance Fan Kit required for TDP >240W

FAQs

Q: Which HPE servers is the P72646-B21 AMD EPYC 9845 compatible with?
A: The AMD EPYC 9845 (P72646-B21) is compatible with HPE ProLiant Gen11 and Gen12 servers that use the SP5 socket. Always verify your specific server model's QuickSpecs to confirm processor support before ordering.

Q: Does this processor include a heatsink or fan kit?
A: No. The P72646-B21 is a processor-only kit. Because the EPYC 9845 operates at 390W TDP, HPE requires a Performance Heatsink Kit and a Performance Fan Kit (sold separately) for proper thermal management. These must be ordered in addition to the processor.

Q: Can the EPYC 9845 be used in a dual-socket configuration?
A: Yes. The EPYC 9845 supports dual-socket deployments via AMD's 3xGMI inter-processor interconnect. In a two-socket server, the platform supports up to 160 PCIe 5.0 lanes and up to 6TB of DDR5-6400 memory across 24 memory channels.

Q: What is the configurable TDP (cTDP) on this processor?
A: The EPYC 9845 has a nominal TDP of 390W but supports AMD's configurable TDP (cTDP) feature, allowing system administrators to adjust power consumption within supported ranges through BIOS settings. This provides flexibility for power-constrained or thermally limited deployments.

Q: What memory does the EPYC 9845 support?
A: The processor supports DDR5-6400 memory across up to 12 memory channels per socket, with a maximum of 3TB per socket using 1 DIMM per channel (1DPC). HPE DDR5-6400 Smart Memory RDIMMs or LRDIMMs are recommended for validated performance.

Q: Can I purchase the HPE AMD EPYC 9845 processor in Australia from IP Trading?
A: Yes. IP Trading (iptrading.com.au) supplies authentic HPE processor kits including the P72646-B21 to Australian businesses. Contact our team for pricing, availability, and to ensure you order the correct companion heatsink and fan kits for your server configuration.

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