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Rectangular green printed circuit board with gold contact pads and silver metal heat spreader showing Intel branding

Intel

Intel Core i9-12900KF BX8071512900KF desktop processor

SKU CH-MXZZ-VJKGJ MPN BX8071512900KF

16-core hybrid desktop processor with 24 threads, up to 5.2 GHz turbo, 30 MB L3 cache, DDR4-3200 and DDR5-4800 support, 125 W base power, LGA 1700 socket, no integrated graphics

  • Processors TypeDesktop
  • NameCore i9-12900KF
  • CPU Socket TypeLGA 1700
  • Core NameAlder Lake
  • # of Cores16-Core (8P+8E)
  • # of Threads24-Threads
  • 16 cores and 24 threads handle heavy multitasking with ease
  • Hybrid 8 performance plus 8 efficient cores balance speed and power
  • Up to 5.2 GHz max turbo frequency drives single-thread responsiveness
  • Supports DDR4 3200 and DDR5 4800 memory up to 128 GB
  • 20 PCIe lanes across Gen 5 4 3 give fast I/O expansion

16-Core Alder Lake Desktop CPU

The Intel Core i9-12900KF is a 16-core desktop processor built on the Alder Lake architecture with eight performance cores and eight efficient cores. It fits the LGA 1700 socket and delivers 24 threads for heavy multitasking. The chip has no integrated graphics so a discrete GPU is required.

Who this suits and who should look elsewhere

Creators and enthusiasts running threaded workloads such as rendering, compilation or streaming will benefit from the hybrid core design and high turbo frequencies. Users who only need light office or web tasks will not use the available headroom and can choose a lower-tier model.

128 GB dual-channel memory ceiling

The controller supports DDR4-3200 and DDR5-4800 in two channels up to 128 GB total with 76.8 GB/s peak bandwidth. That capacity covers large datasets and virtual machines comfortably. Memory-bound tasks that exceed dual-channel throughput or need more than 128 GB will hit the platform limit.

Highlights

  • 16 cores and 24 threads handle heavy multitasking with ease
  • Hybrid 8 performance plus 8 efficient cores balance speed and power
  • Up to 5.2 GHz max turbo frequency drives single-thread responsiveness
  • Supports DDR4 3200 and DDR5 4800 memory up to 128 GB
  • 20 PCIe lanes across Gen 5 4 3 give fast I/O expansion

Specifications

BrandIntel
Processors TypeDesktop
SeriesCore i9 12th Gen
NameCore i9-12900KF
ModelBX8071512900KF
CPU Socket TypeLGA 1700
Core NameAlder Lake
# of Cores16-Core (8P+8E)
# of Threads24-Threads
Operating FrequencyP-core Base Frequency: 3.2 GHz
E-core Base Frequency: 2.4 GHz
Max Turbo FrequencyIntel Turbo Boost Max Technology 3.0 Frequency: Up to 5.2 GHz
Single P-core Turbo Frequency: Up to 5.1 GHz
Single E-core Turbo Frequency: Up to 3.9 GHz
L2 Cache14MB
L3 Cache30MB
Manufacturing TechIntel 7
Instruction Set64-Bit
Hyper-Threading SupportYes
Memory TypesDDR4 3200 / DDR5 4800
Memory Channel2
Max Memory Size128 GB
Max Memory Bandwidth76.8 GB/s
Virtualization Technology SupportYes
Integrated GraphicsNone Integrated Graphics
PCI Express Revision5.0 / 4.0 / 3.0
Max Number of PCI Express Lanes20
Thermal Design PowerProcessor Base Power: 125W
Maximum Turbo Power: 241W
Cooling DeviceCooling device not included - Processor Only
Operating System SupportedWindows 11
Shipping weight0.09 kg
Package size117 × 104 × 48 mm

Questions about this item

What motherboard socket do I need for the LGA 1700 processor?

The processor requires a motherboard with an LGA 1700 socket.

Can I keep my existing DDR4 3200 memory with the 16-core CPU?

Yes, the memory controller supports DDR4 3200 alongside DDR5 4800 in dual-channel mode up to 128 GB.

How do I confirm the 30 MB L3 cache is active after assembly?

Check the reported L3 cache size in BIOS or a system-information utility such as CPU-Z.

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