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Intel

Intel Xeon W7-3465X 28-core 2.5 GHz server processor PK8071305081700

SKU CH-6BTW-3W86C MPN PK8071305081700

28-core Xeon server CPU reaching 4.80 GHz with 75 MB L3 cache, 8-channel DDR5-4800 support and 112 PCIe 5.0 lanes

  • NameXeon W7-3465X
  • CPU Socket TypeLGA 4677
  • Core NameSapphire Rapids
  • # of Cores28-Core
  • # of Threads56
  • Operating Frequency2.5 GHz
  • 28 cores and 56 threads handle heavy parallel workloads
  • 80 GHz max turbo frequency accelerates single-thread bursts
  • 75 MB L3 cache reduces latency for large data sets
  • Eight-channel DDR5 4800 controller supports up to 4 TB memory
  • 112 PCI Express 5.0 lanes provide high-bandwidth I/O expansion

28-core Xeon for multi-threaded workloads

The Intel Xeon W7-3465X is a 28-core, 56-thread server processor built for workstations that run heavily parallel applications. It operates at a 2.5 GHz base frequency and can reach 4.80 GHz with Intel Turbo Boost Max Technology 3.0. The 75 MB L3 cache and 7 nm manufacturing help sustain throughput across many simultaneous threads. Buyers who need only lightly threaded performance or lower core counts will not benefit from this design.

DDR5-4800 eight-channel memory and PCIe 5.0 limits

The integrated memory controller supports DDR5 at 4800 MT/s across eight channels for a maximum capacity of 4 TB. Memory bandwidth scales with populated channels; partially filled configurations reduce peak throughput. The CPU provides 112 lanes of PCI Express 5.0 for GPUs, storage and networking add-in cards. Platforms that cannot supply eight memory channels or that limit PCIe lane allocation will constrain the processor’s I/O potential.

Verify LGA 4677 socket.

This processor requires a motherboard with an LGA 4677 socket and a workstation-class chipset that enables the full eight-channel memory and 112-lane PCIe topology. The cooling solution must dissipate a 300 W base power and up to 360 W under maximum turbo. The physical package measures 3.1 by 2.2 inches, so the cooler mounting pattern and case clearance must accommodate those dimensions. Systems without adequate VRM phases or firmware support for Sapphire Rapids will not boot.

Highlights

  • 28 cores and 56 threads handle heavy parallel workloads
  • 80 GHz max turbo frequency accelerates single-thread bursts
  • 75 MB L3 cache reduces latency for large data sets
  • Eight-channel DDR5 4800 controller supports up to 4 TB memory
  • 112 PCI Express 5.0 lanes provide high-bandwidth I/O expansion

Specifications

BrandIntel
SeriesIntel Xeon W
NameXeon W7-3465X
ModelPK8071305081700
CPU Socket TypeLGA 4677
Core NameSapphire Rapids
# of Cores28-Core
# of Threads56
Operating Frequency2.5 GHz
Max Turbo FrequencyMax Turbo Frequency: 4.80 GHz
Intel Turbo Boost Max Technology 3.0 Frequency: 4.80 GHz
Intel Turbo Boost Technology 2.0 Frequency: 4.60 GHz
L3 Cache75MB
64-Bit SupportYes
Hyper-Threading SupportYes
Manufacturing Tech7 nm
Integrated Memory Controller SpeedDDR5 4800
Maximum Memory Capacity4TB
Memory Channel8 Channel
Virtualization Technology SupportYes
PCI Express Revision5.0
Max # of PCI Express Lanes112
Thermal Design PowerProcessor Base Power: 300 W
Maximum Turbo Power: 360 W
Shipping weight1.14 kg
Package size195 × 147 × 130 mm

Questions about this item

Should I choose the 28-core 2.5 GHz model or a higher-core alternative?

This SKU is a single 28-core, 56-thread part with 75 MB L3 cache and a 4.80 GHz max turbo; no other core counts or clock speeds are offered under this model number.

What does the 4.80 GHz max turbo mean once the chip is installed?

Under Intel Turbo Boost Max Technology 3.0, one or two favoured cores can reach 4.80 GHz for short bursts while the 300 W base power and 360 W maximum turbo power limits and the 75 °C thermal specification govern sustained operation.

How does the PCIe 5.0 interface with 112 lanes cap real-world expansion?

The processor exposes up to 112 PCIe 5.0 lanes, so multiple x16 GPUs, x8 storage controllers or x4 NICs can run simultaneously at full 5.0 bandwidth without lane sharing.

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