Intel Xeon Platinum 8558P
Expert rating8.6 / 10
- Brand:
- Intel
- Form Factor:
- Server & Enthusiast
- CPU Socket:
- LGA 4677
- Core/Thread Count:
- 44C/88T
- TDP:
- 330W
- iGPU:
- None
- CPU Series:
- Xeon Platinum
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Manufacturer: Intel Last updated: 2026-09-12
Intel Xeon Platinum 8558P Review
Intel Xeon Platinum 8558P 44-core 88-thread server processor, 2.7GHz base / 4.0GHz boost, 330W TDP, Emerald Rapids, LGA 4677 socket
The Intel Xeon Platinum 8558P is a top-tier data center processor for the most demanding multi-socket server and AI infrastructure deployments. It pairs 44 cores and 88 threads with a 2.7GHz base clock that boosts up to 4.0GHz and None graphics, all within a 330W envelope.
Performance and Architecture
With 44 cores and 88 threads, the Intel Xeon Platinum 8558P runs a 2.7GHz base clock that boosts up to 4.0GHz, backed by 260MB of L3 cache and None graphics on the Emerald Rapids architecture.
Platform and Deployment
The Intel Xeon Platinum 8558P uses the LGA 4677 platform in a 330W envelope, positioned as a top-tier data center processor for the most demanding multi-socket server and AI infrastructure deployments..
Comparison to Alternatives
Within the Xeon Platinum lineup in this catalog, the Intel Xeon Platinum 8558P sits at the 44-core tier, differentiated mainly by clock speed, TDP, and socket from its closest siblings. Against AMD's EPYC processors in this catalog at a similar tier, the Intel Xeon Platinum 8558P competes on platform ecosystem and per-core efficiency, while against Intel's own Xeon 6 (Granite/Sierra Rapids) parts in this catalog it occupies a narrower, more specialized deployment niche.
Specifications
Identity
| Product Line | Xeon |
|---|---|
| Model Number | Platinum 8558P |
| Codename | Emerald Rapids |
| Release Year | 2023 |
Segment and platform
| Market Segment | Server |
|---|---|
| Microarchitecture | Emerald Rapids |
| Socket | LGA4677 |
| Socket Status | Current |
| Process Node | 10 nm |
Core configuration
| Total Cores | 48 |
|---|---|
| Performance Cores | 48 |
| Efficiency Cores | 0 |
| Total Threads | 96 |
| SMT Enabled | Yes |
Clock speeds
| P-Core Base Clock | 2.7 GHz |
|---|---|
| P-Core Boost Clock | 4.0 GHz |
Cache
| L3 Cache | 260 MB |
|---|
Power and thermal
| Base Power | 350 W |
|---|
Memory
| Memory Type | DDR5 |
|---|---|
| Max Memory Speed | 5600 MT/s |
| Memory Channels | 8 |
| Max Memory Capacity | 4096 GB |
| ECC Support | Yes |
Graphics and AI
| Integrated Graphics | No |
|---|---|
| Copilot Plus Certified | No |
Expansion
| PCIe Generation | PCIe 5.0 |
|---|---|
| PCIe Lanes | 80 |
| Form Factor | Server & Enthusiast |
|---|---|
| TDP | 350 W |
| iGPU | None |
Expert Review
Reviewed by Burooj Alam. Rated by us, not by users.
Expert rating8.6 / 10
The Intel Xeon Platinum 8558P is a top-tier data center chip, built for the heaviest multi-socket server and AI infrastructure workloads.
Best for
- Multi-socket data centers
- AI training infrastructure
- Large-scale virtualization
Not for
- Single-socket small business servers
- Desktop use
- Battery-powered devices
FAQs
What are the key specifications of the Intel Xeon Platinum 8558P?
The Intel Xeon Platinum 8558P is a processor from Intel. Key specs: Cores 44, Threads 88, Base Clock 2.7 GHz, Boost Clock 4.0 GHz, L3 Cache 260.
Will the Intel Xeon Platinum 8558P work with my current setup?
The Intel Xeon Platinum 8558P lists Socket is LGA 4677. Check that against the hardware you already own before buying, since this is the field that most often decides whether a part fits.
Who is the Intel Xeon Platinum 8558P best suited to?
It suits multi-socket data centers, ai training infrastructure, large-scale virtualization.
What are the drawbacks of the Intel Xeon Platinum 8558P?
It is a poor fit for single-socket small business servers, desktop use, battery-powered devices.