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Intel Xeon Gold 6438M server CPU in LGA 4677 socket package

Intel

Intel PK8071305122301 Xeon Gold 6438M 32-core server processor

SKU CH-8NVS-095ET MPN PK8071305122301

32-core Xeon server processor running at 2.2 GHz with 60 MB L3 cache, 64 threads, 80 PCIe 5.0 lanes and DDR5-4800 support in an LGA 4677 socket

  • NameXeon Gold 6438M
  • CPU Socket TypeLGA 4677
  • Core NameSapphire Rapids
  • # of Cores32-Core
  • # of Threads64
  • Operating Frequency2.2 GHz
  • 32 cores and 64 threads handle heavy parallel workloads
  • 2 GHz base with 3.9 GHz max turbo frequency for responsive performance
  • 60 MB L3 cache reduces latency for large data sets
  • DDR5 4800 eight-channel memory controller supports up to 4 TB capacity
  • PCIe 5.0 with 80 lanes enables high-speed I/O expansion

Xeon Gold 6438M 32-core server processor

The Intel Xeon Gold 6438M is a 32-core, 64-thread server processor built on 10 nm Sapphire Rapids architecture. It operates at a 2.2 GHz base frequency with a 3.9 GHz maximum turbo frequency and includes 60 MB of L3 cache. The CPU fits the LGA 4677 socket and has a 205 W thermal design power.

Suited for dual-socket DDR5 platforms needing 80

This processor supports up to 4 TB of DDR5-4800 memory across eight channels and scales to two sockets, making it appropriate for memory-intensive workloads and high I/O throughput. Builders targeting single-socket boards, lower core counts, or platforms limited to fewer memory channels or PCIe lanes should consider other options.

LGA 4677 socket and 205 W TDP define platform

The processor requires a motherboard with the LGA 4677 socket and cooling capable of dissipating 205 W. Memory must be DDR5-4800, and the platform must deliver eight memory channels and up to 80 PCIe 5.0 lanes to utilise the full specification.

Highlights

  • 32 cores and 64 threads handle heavy parallel workloads
  • 2 GHz base with 3.9 GHz max turbo frequency for responsive performance
  • 60 MB L3 cache reduces latency for large data sets
  • DDR5 4800 eight-channel memory controller supports up to 4 TB capacity
  • PCIe 5.0 with 80 lanes enables high-speed I/O expansion

Specifications

BrandIntel
SeriesIntel Xeon Gold
NameXeon Gold 6438M
ModelPK8071305122301
CPU Socket TypeLGA 4677
Core NameSapphire Rapids
# of Cores32-Core
# of Threads64
Operating Frequency2.2 GHz
Max Turbo Frequency3.9 GHz
L3 Cache60MB
64-Bit SupportYes
Manufacturing Tech10 nm
Integrated Memory Controller SpeedDDR5 4800
Maximum Memory Capacity4TB
Memory Channel8 Channel
Virtualization Technology SupportYes
Scalability2S
PCI Express Revision5.0
Max # of PCI Express Lanes80
Multimedia InstructionIntel AMX, Intel SSE4.2, Intel AVX, Intel AVX2, Intel AVX-512
Thermal Design Power205W
Cooling DeviceCooling device not included - Processor Only
Shipping weight0.91 kg
Package size25 × 25 × 25 mm

Questions about this item

How does the 2.2 GHz base clock behave once the Xeon Gold 6438M is installed in a dual-socket server?

The processor runs at 2.2 GHz across all 32 cores under sustained load and can lift individual cores to 3.9 GHz when thermal headroom allows.

What does the PCIe 5.0 interface with 80 lanes cap in real-world I/O?

The 80 lanes of PCIe 5.0 provide up to 32 GT/s per lane for accelerators, storage controllers and networking cards.

What physical clearance does the LGA 4677 socket and 205 W TDP demand in the chassis?

The FCLGA4677 package requires a compatible server board and a cooler rated for at least 205 W of heat dissipation.

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