• Cisco UCS-CPU-I6421N Xeon Gold 6421N 32-core CPU chip with gold pins
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Cisco

Cisco UCS-CPU-I6421N | Xeon Gold 6421N | 32C | 1.8GHz | 60MB L3 | 185W | DDR5-4400 | LGA4677

UCS-CPU-I6421N

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Description

Intel Xeon Gold 6421N offers 32 cores at 1.8 GHz base with 60 MB L3 cache and 185 W TDP for scalable performance in Cisco UCS servers. Supports DDR5-4400 on the LGA4677 platform; verify UCS server compatibility and required thermal kit.

Features

- 32-core scaling for dense virtualization and multi-threaded workloads
- 185 W TDP for strong sustained performance
- DDR5-4400 memory support for higher bandwidth
- Designed for LGA4677 Cisco UCS platforms with enterprise RAS

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

- Processor family: Intel Xeon Gold (4th Gen Xeon Scalable)
- Model: 6421N
- Cores: 32
- Base frequency: 1.8 GHz
- L3 cache: 60 MB
- TDP: 185 W
- Memory support: DDR5-4400
- Socket: LGA4677
- Platform compatibility: Cisco UCS (consult server HCL)

FAQs

Q: Will this CPU work in dual-socket configurations?
A: Yes, provided both sockets use identical 6421N processors and the server supports dual-socket configurations.

Q: Do I need a BIOS/firmware update?
A: Some servers require a BIOS/firmware update to support specific CPUs. Check your UCS release notes before installation.

Q: Is memory speed fixed at 4400 MT/s?
A: 4400 MT/s is the maximum supported rate; actual operating speed depends on DIMMs, population rules, and platform limits.

Q: Are installation tools or heatsinks included?
A: Thermal hardware is server-specific and usually sold separately unless part of a CPU kit bundle.

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