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Intel Xeon 656 Granite Rapids 2.9 GHz 72MB L3 Cache LGA 4710 210W Server Processor - OEM

  • 20-Core/40-Threads
  • Intel 3 Granite Rapids
  • 72MB L3 Cache
  • 210W
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Specs
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Learn more about the Xeon 656

Model
Brand Intel
Series Xeon 6
Name Xeon 656
Part Number PK8072007104700
Details
CPU Socket Type LGA 4710
CPU Code Name Granite Rapids
# of Cores 20-Core (20P+0E)
# of Threads 40
Operating Frequency 2.9 GHz
Max Turbo Frequency Max Turbo Frequency: 4.8 GHz
Intel Turbo Boost Max Technology 3.0 Frequency: 4.8 GHz
Intel Turbo Boost Technology 2.0 Frequency: 4.6 GHz
L3 Cache 72MB
64-Bit Support Yes
Hyper-Threading Support Yes
Manufacturing Tech Intel 3
Integrated Memory Controller Speed DDR5 6400MHz
Maximum Memory Capacity 4TB
Memory Channel 8 Channel
Virtualization Technology Support Yes
Scalability 1S Only
PCI Express Revision 5.0
Max # of PCI Express Lanes 128
Multimedia Instruction Intel SSE4.1, Intel AMX, Intel SSE4.2, Intel AVX2, Intel AVX-512
Thermal Design Power 210W
Max Turbo Power 252W
Additional Information
First Listed on Newegg June 08, 2026

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The Intel Xeon 656 is a 20-core, 40-thread workstation processor for builders who need substantial multi-threaded CPU capacity, with a 2.9 GHz base frequency, boost up to 4.8 GHz, and 72 MB of L3 cache. It is designed for single-socket LGA 4710 systems.

Recommended For

  • Workstation users running engineering simulation or visualization jobs that can use many CPU threads and benefit from ECC memory and high memory bandwidth.
  • Professional creators who run CPU-based rendering, encoding, or other parallel media jobs on a fixed workstation and need room for multiple GPUs, storage devices, or network cards.
  • Single-socket workstation or server builders who need substantial ECC memory capacity and many PCIe 5.0 lanes for memory-heavy applications, expansion cards, or local storage.
  • Developers and data-science teams testing CPU-based AI or machine-learning workloads that can use Intel AMX, while keeping the system in a workstation rather than a compact or mobile setup.

Real-World Use Scenarios

  • When a workstation user renders scenes or runs other CPU-based batch jobs, the Xeon 656 can work through multiple parallel tasks at once; the benefit depends on how well the application uses multiple cores.
  • For compatible local AI inference or image-denoising software, AMX support can accelerate supported matrix operations on the CPU; results depend on the application and its software support.
  • When compiling large software projects or running parallel tests, the 20-core CPU can handle multiple build and test tasks concurrently, helping keep CPU-heavy development work moving while other jobs run.
  • For memory-intensive engineering simulations or data analysis, a properly configured Xeon 656 workstation can use eight memory channels and ECC memory; the amount of memory available depends on the motherboard and installed DIMMs.
  • In a single-socket workstation used as a virtualization lab, the Xeon 656 can host several test or development virtual machines at once; practical capacity depends on memory, storage, and the hypervisor workload.

Spec Summary

AttributeValue
Best ForSingle-socket server or workstation builds needing 20 cores and 40 threads, with support for up to 4TB of DDR5 memory
Cores And Threads20 cores (20 performance cores, 0 efficiency cores) and 40 threads, with Hyper-Threading support
Clock Speeds2.9 GHz base frequency, up to 4.8 GHz with Turbo Boost Max Technology 3.0 and 4.6 GHz with Turbo Boost 2.0
Cache And Power72MB L3 cache, 210W thermal design power and 252W maximum turbo power
Socket And PlatformLGA 4710 socket, Granite Rapids architecture, Intel 3 manufacturing process; single-socket scalability
Memory SupportEight-channel DDR5 memory at up to 6400MHz, with maximum capacity of 4TB
PCIe And ExpansionPCI Express 5.0 support with up to 128 lanes
Instruction Sets And VirtualizationSupports Intel SSE4.1, SSE4.2, AMX, AVX2, AVX-512, 64-bit computing and virtualization
Model IdentifiersIntel Xeon 6, Xeon 656; part number PK8072007104700