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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

  • Product nameCore i9-12900KF
  • CPU cores16-Core (8P+8E)
  • CPU socketLGA 1700
  • Maximum turbo clockIntel Turbo Boost Max Technology 3.0 Frequency: Up to 5.2 GH
  • TDP ratingProcessor Base Power: 125 W Maximum Turbo Power: 241 W
  • Processor classDesktop
  • 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.

How it compares

Measured against everything we stock in Desktop Processors, at today’s prices. Recalculated every night.

Price $288.99
Pricier than about 73% of the 494 comparable items (median $149.99).
CPU cores 16-Core (8P+8E)
Higher than about 70% of the 271 comparable items (median 8).
TDP rating Processor Base Power: 125 W Maximum Turbo Power: 241 W
Higher than about 70% of the 320 comparable items (median 95 W).

New to this? Buying a processor with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameIntel
Product lineCore i9 12th Gen
Model nameBX8071512900KF
Product nameCore i9-12900KF
Performance
Working frequencyP-core Base Frequency: 3.2 GHz
E-core Base Frequency: 2.4 GHz
Processor
CPU cores16-Core (8P+8E)
CPU socketLGA 1700
Maximum turbo clockIntel 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
TDP ratingProcessor Base Power: 125 W
Maximum Turbo Power: 241 W
Processor classDesktop
Processor codenameAlder Lake
CPU threads24-Threads
Level 2 cache14 MB
Level 3 cache30 MB
Process nodeIntel 7
CPU instruction set64-Bit
Hyper-ThreadingYes
Virtualization supportYes
Max PCIe lanes20
Memory
Supported memoryDDR4 3200 / DDR5 4800
Channel configuration2
Memory limit128 GB
Maximum memory bandwidth76.8 GB/s
Graphics
Built-in graphicsNone Integrated Graphics
Ports & slots
PCIe generation5.0 / 4.0 / 3.0
Size & build
Shipping weight0.09 kg
Package size117 × 104 × 48 mm
Compatibility
Compatible systemsWindows 11
In the box
Included coolerNot included - Processor Only

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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