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Cisco

Cisco HX-CPU-6138 | Xeon Gold 6138 | 20C/40T | 2.0 GHz base, up to 3.7 GHz turbo | 27.5 MB L3 | 125W TDP | LGA3647 | DDR4-2666 (6-channel) | 48 PCIe 3.0 lanes | 3x UPI 10.4 GT/s | Max 768 GB RAM/socket

SKU:HX-CPU-6138

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Description

High-density 20-core CPU for scale-out virtualization, private cloud, and analytics on UCS/HyperFlex servers. Balances core count, cache, and power for efficient multi-VM consolidation.

Features

- High core count for VM density and parallel workloads
- Balanced power envelope at 125W for efficient performance per watt
- 27.5 MB L3 cache to feed multi-threaded applications
- Triple UPI links for robust multi-socket scaling
- Rich I/O with 48 PCIe 3.0 lanes for NICs, NVMe, and accelerators

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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FAQs

Technical Specifications

FAQs

Q: What workloads suit the 20-core 6138 best?
A: Virtualization clusters, VDI, private cloud, analytics, and dense microservices benefit from the high core count.

Q: Does this CPU require specific memory types?
A: Use ECC RDIMM or LRDIMM DDR4-2666 modules qualified for your UCS/HyperFlex platform.

Q: Is BIOS/firmware update needed when upgrading CPUs?
A: Often yes. Check your server’s release notes for the minimum firmware supporting the 61xx family.

Q: Can I pair it with non-identical CPUs in dual socket?
A: No. Both sockets should use identical CPU models and similar stepping.

Q: Does it support hardware virtualization?
A: Yes, it supports VT-x, VT-d, and SR-IOV features depending on platform support.

Technical Specifications

- Processor model: Xeon Gold 6138
- Microarchitecture: Xeon Scalable 1st Gen (Skylake-SP)
- Cores / Threads: 20 / 40
- Base frequency: 2.0 GHz
- Max turbo frequency: up to 3.7 GHz
- L3 cache: 27.5 MB
- TDP: 125 W
- Socket: LGA3647
- Memory support: 6-channel DDR4-2666, ECC RDIMM/LRDIMM
- Max memory per socket: 768 GB
- UPI: 3 links at 10.4 GT/s
- PCIe: 48 lanes, PCIe 3.0
- Instruction set features: 64-bit, AVX-512, AES-NI, VT-x, VT-d
- Process technology: 14 nm

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