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Square green printed circuit board with gold contact pads and silver metal heat spreader marked Intel Xeon 8558U

Intel

Intel Xeon Platinum 8558U 48-core 2.0 GHz server processor PK8072205512400

SKU CH-0XTF-1ZZ18 MPN PK8072205512400

48-core Xeon server processor with 96 threads, 260 MB L3 cache, 2.0 GHz base and 4.0 GHz turbo, LGA 4677 socket, 300 W TDP, PCIe 5.0 with 80 lanes.

  • Product nameXeon Platinum 8558U
  • CPU cores48-Core
  • CPU socketLGA 4677
  • Maximum turbo clock4.0 GHz
  • TDP rating300 W
  • Processor codenameEmerald Rapids
  • 48 cores and 96 threads scale through parallel workloads
  • 0 GHz base and 4.0 GHz max turbo adapt to variable demands
  • 260 MB L3 cache keeps large data sets close to the cores
  • 80 PCIe 5.0 lanes connect high-throughput accelerators and storage
  • 300 W TDP within a 10 nm process balances density and power

48-core Xeon Platinum 8558U for single-socket

This Intel Xeon Platinum 8558U is a 48-core, 96-thread server processor built for single-socket platforms. It runs at a 2.0 GHz base frequency and can reach 4.0 GHz maximum turbo frequency. The chip provides 260 MB of L3 cache and fits the LGA 4677 socket with a 300 W thermal design power.

Suited for dense single-socket compute.

The processor supports 1S Only scalability, making it appropriate for workloads that fit within one socket such as virtualisation, database, or high-performance computing nodes. Buyers who need multi-socket scaling or higher core counts per socket should look at other parts.

80 lanes of PCI Express 5.0 for high-bandwidth I/O

The CPU exposes up to 80 PCI Express 5.0 lanes, enabling direct attachment of fast storage, networking, and accelerator cards without a switch. This lane count is the key figure for determining whether the platform can support the required I/O configuration.

How it compares

Measured against everything we stock in Server Processors, at today’s prices. Recalculated every night.

Price $2,794.99
Pricier than about 71% of the 621 comparable items (median $1,561.99).
CPU cores 48-Core
Higher than about 77% of the 386 comparable items (median 24).
Maximum turbo clock 4.0 GHz
Higher than about 63% of the 327 comparable items (median 3.9 GHz).

New to this? Buying a processor with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameIntel
Product lineIntel Xeon Platinum
Model namePK8072205512400
Product nameXeon Platinum 8558U
Performance
Working frequency2.0 GHz
Processor
CPU cores48-Core
CPU socketLGA 4677
Maximum turbo clock4.0 GHz
TDP rating300 W
Processor codenameEmerald Rapids
CPU threads96
Level 3 cache260 MB
64-bit capableYes
Process node10 nm
Virtualization supportYes
CPU socket scalability1S Only
Maximum PCIe lanes80
Memory
Supported memory speed4800 MHz
Max supported memory4 TB
Channel configuration8 Channel
Ports & slots
PCIe generation5.0
Size & build
Shipping weight0.45 kg
Package size25 × 25 × 6 mm
In the box
Included coolerNot included - Processor Only

Questions about this item

Should I choose the 8558U or a lower-core Platinum model for a single-socket server?

The 8558U provides 48 cores and 96 threads with a 2.0 GHz base and 4.0 GHz max turbo, while 1S-only scalability means it cannot be paired in a dual-socket system.

How does the 2.0 GHz base clock translate to actual throughput under sustained load?

All 48 cores run at 2.0 GHz continuously within the 300 W TDP; workloads that can use 96 threads will see maximum throughput at this frequency, while lighter loads can boost up to 4.0 GHz on fewer cores.

What does PCI Express 5.0 with 80 lanes cap in practice?

The processor exposes 80 lanes of PCIe 5.0, allowing up to 80 lanes of Gen 5 bandwidth for add-in cards, limited by the motherboard's physical slot layout.

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