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Cisco

Cisco HCIX-CPU-I8558 | 48C/96T, 2.0 GHz base, 260 MB L3, 330W TDP, 8x DDR5-5200, LGA4677, PCIe 5.0

SKU:HCIX-CPU-I8558

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Description

Next-gen Xeon Scalable CPU with expanded cache and higher memory speeds, well-suited for in-memory databases, telemetry, and mixed cloud workloads. 48 cores and a massive 260 MB L3 combine with 8-channel DDR5-5200 for strong per-socket performance.

Features

- Large 260 MB L3 cache for in-memory and cache-sensitive workloads
- 8-channel DDR5-5200 for higher memory bandwidth
- 48 cores for balanced performance and power
- PCIe 5.0 connectivity for high-speed NVMe and accelerators
- Emerald Rapids platform benefits on LGA4677

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: Is this CPU compatible with Sapphire Rapids platforms?
A: It targets LGA4677 platforms; many boards that support 5th Gen (Emerald Rapids) also support 4th Gen with the correct BIOS. Check your server vendor’s CPU support list.

Q: What memory should I use?
A: Use ECC DDR5 RDIMMs validated by your server vendor. Up to 5200 MT/s is supported, subject to DIMM count and population rules.

Q: Is cooling hardware included?
A: No. Use a platform-qualified heatsink and airflow solution rated for 330W.

Q: Can I pair this with a different Xeon in dual-socket?
A: Use identical CPUs for dual-socket configurations. Mixing models is generally unsupported.

Q: Do I need a BIOS update?
A: Yes, ensure the latest BIOS/firmware that adds support for this specific CPU model before installation.

Technical Specifications

- CPU model: Xeon Platinum 8558
- Cores/Threads: 48 / 96
- Base frequency: 2.0 GHz
- L3 cache: 260 MB
- Processor TDP: 330 W
- Memory support: 8-channel DDR5-5200, ECC RDIMM
- Socket: LGA4677
- PCIe support: PCIe 5.0 (up to 80 lanes platform-dependent)
- Inter-socket: UPI links (platform-dependent)
- Process generation: Xeon Scalable 5th Gen (Emerald Rapids)
- Platform requirements: Compatible LGA4677 server board and current BIOS/microcode

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