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Silver rectangular server processor with gold contact pads on the underside and Intel branding on the integrated heat spreader

Intel

Intel Xeon W-3175X 28-Core 3.1 GHz LGA 3647 255W server processor

SKU CH-ENVB-0DN7P

28-core, 56-thread server processor reaching 3.8 GHz turbo with 38.5 MB L3 cache and 48 PCIe 3.0 lanes in an LGA 3647 socket

  • NameXeon W-3175X
  • CPU Socket TypeLGA 3647
  • Core NameSkyLake
  • # of Cores28-Core
  • # of Threads56
  • Operating Frequency3.1 GHz
  • 28 cores and 56 threads accelerate heavy multithreaded workloads
  • 1 GHz base with 3.8 GHz max turbo boosts single-thread speed
  • 5 MB L3 cache reduces latency on large data sets
  • 48 PCIe 3.0 lanes enable high-bandwidth I/O expansion
  • 6-channel memory architecture increases throughput for memory-bound tasks

28-Core Xeon W-3175X Workstation Processor

The Intel Xeon W-3175X is a 28-core, 56-thread server CPU built for professional workstations. It runs at a 3.1 GHz base frequency with a 3.8 GHz maximum turbo. The processor fits the LGA 3647 socket and includes 38.5 MB of L3 cache. It supports six memory channels and 48 PCI Express 3.0 lanes.

Suits Heavy Compute, Not General Desktop Builds

This processor targets users running heavily threaded workloads such as rendering, simulation or virtualisation. The 255 W thermal design power and mandatory LGA 3647 platform make it unsuitable for standard desktop chassis or consumer motherboards. Buyers needing lower power draw or mainstream socket compatibility should look elsewhere.

255 W TDP Demands Robust Cooling Solution

The 255 W thermal design power is the single specification that dictates system viability. No cooling device is included in the box. A workstation-class cooler rated for this heat output and the LGA 3647 mounting pattern is mandatory for stable operation.

Highlights

  • 28 cores and 56 threads accelerate heavy multithreaded workloads
  • 1 GHz base with 3.8 GHz max turbo boosts single-thread speed
  • 5 MB L3 cache reduces latency on large data sets
  • 48 PCIe 3.0 lanes enable high-bandwidth I/O expansion
  • 6-channel memory architecture increases throughput for memory-bound tasks

Specifications

BrandIntel
SeriesIntel Xeon W
NameXeon W-3175X
ModelBX80673W3175X
CPU Socket TypeLGA 3647
Core NameSkyLake
# of Cores28-Core
# of Threads56
Operating Frequency3.1 GHz
Max Turbo Frequency3.8 GHz
L3 Cache38.5MB
64-Bit SupportYes
Hyper-Threading SupportYes
Manufacturing Tech14 nm
Memory Channel6
Virtualization Technology SupportYes
PCI Express Revision3.0
Max # of PCI Express Lanes48
Thermal Design Power255W
Cooling DeviceCooling device not included - Processor Only

Questions about this item

Should I choose the 28-core 3.1 GHz version or a lower-core model for my workstation?

This specific model is the 28-core, 56-thread Xeon W-3175X at 3.1 GHz base and 3.8 GHz max turbo; no other core-count versions are listed for this product.

What does the 3.8 GHz turbo figure mean when the processor is inside a real machine?

The 3.8 GHz max turbo frequency is the peak single-core speed achievable under thermal and power headroom; sustained all-core speeds will stay closer to the 3.1 GHz base depending on workload and cooling.

What does the PCIe 3.0 interface with 48 lanes cap in practice?

The processor provides 48 PCI Express 3.0 lanes total, setting the maximum combined bandwidth available for GPUs, storage and add-in cards connected to the CPU.

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