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Intel

Intel PK8071305554400 Xeon Silver 4509Y 8C 2.6GHz 125W server processor

SKU CH-VR1J-14Y5C MPN PK8071305554400

Eight-core server processor with 16 threads, 2.6 GHz base clock, 4.1 GHz turbo, 22.5 MB L3 cache, DDR5-4400 support and 125 W TDP

  • NameXeon Silver 4509Y
  • CPU Socket TypeLGA 4677
  • Core NameSapphire Rapids
  • # of Cores8-Core
  • # of Threads16
  • Operating Frequency2.6 GHz
  • 8 cores and 16 threads handle parallel workloads efficiently
  • 6 GHz base clock with 4.1 GHz max turbo frequency for responsive performance
  • 5 MB L3 cache reduces memory latency for data-intensive tasks
  • DDR5 4400 support across 8 memory channels enables high bandwidth
  • 80 PCIe 5.0 lanes provide extensive I/O connectivity for expansion cards

Server CPU for dual-socket platforms

The Intel Xeon Silver 4509Y is an eight-core server processor with sixteen threads. It operates at a base frequency of 2.6 GHz and reaches a maximum turbo frequency of 4.1 GHz. The chip provides 22.5 MB of L3 cache and fits the LGA 4677 socket.

Installation uses the LGA 4677 socket

Mounting follows the standard LGA 4677 procedure with a compatible server board and cooling solution rated for 125 W. The processor includes an integrated memory controller supporting eight-channel DDR5 at 4400 MT/s. Incorrect socket alignment or insufficient cooling capacity are the most common issues during installation.

Suited for two-socket servers needing moderate

This processor fits workloads that require up to 4 TB of memory across eight channels and eighty PCI Express 5.0 lanes. It is not intended for single-socket systems or builds that require higher core densities per socket. Buyers needing more cores or threads per processor should evaluate other models in the range.

Highlights

  • 8 cores and 16 threads handle parallel workloads efficiently
  • 6 GHz base clock with 4.1 GHz max turbo frequency for responsive performance
  • 5 MB L3 cache reduces memory latency for data-intensive tasks
  • DDR5 4400 support across 8 memory channels enables high bandwidth
  • 80 PCIe 5.0 lanes provide extensive I/O connectivity for expansion cards

Specifications

BrandIntel
SeriesIntel Xeon Silver
NameXeon Silver 4509Y
ModelPK8071305554400
CPU Socket TypeLGA 4677
Core NameSapphire Rapids
# of Cores8-Core
# of Threads16
Operating Frequency2.6 GHz
Max Turbo Frequency4.1 GHz
L3 Cache22.5MB
64-Bit SupportYes
Manufacturing Tech10 nm
Integrated Memory Controller SpeedDDR5 4400
Maximum Memory Capacity4TB
Memory Channel8 Channel
Virtualization Technology SupportYes
Scalability2S
PCI Express Revision5.0
Max # of PCI Express Lanes80
Thermal Design Power125W
Cooling DeviceCooling device not included - Processor Only
Shipping weight0.05 kg
Package size76 × 64 × 3 mm

Questions about this item

How can I confirm the Xeon Silver 4509Y is running at its 2.6 GHz base frequency after installation?

Enter the system BIOS or use a hardware monitoring tool such as Intel Processor Diagnostic Tool to verify the reported core speed matches 2.6 GHz under idle load.

Does the PK8071305554400 include a heatsink or thermal paste, and what else must I purchase separately?

The processor ships as an OEM tray unit without a cooler or thermal compound; you must buy a compatible LGA 4677 heatsink and DDR5-4400 memory modules separately.

Which memory configuration should I choose to fully utilise the 8-channel controller and 4 TB maximum capacity?

Populate all eight channels with DDR5-4400 RDIMMs or 3DS RDIMMs of equal capacity to reach the 4 TB limit and maintain balanced bandwidth across the controller.

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