Intel Core i9-12900KF processor review

Core i9-12900KF processor released by Intel; release date: 4 Nov 2021. At the time of release, the processor cost $564 - $574. The processor is designed for desktop-computers and based on Alder Lake microarchitecture.

CPU is locked to prevent overclocking. Maximum CPU clock speed - 5.20 GHz. Maximum operating temperature - 100°C. Manufacturing process technology - Intel 7. Cache size: L1 - 1 MB, L2 - 14 MB, L3 - 30 MB.

Supported memory types: Up to DDR5 4800 MT/s Up to DDR4 3200 MT/s. Maximum memory size: 128 GB.

Supported socket types: FCLGA1700. Maximum number of processors in a configuration - 1.


Single thread mark
Top 1 CPU
This CPU
CPU mark
Top 1 CPU
This CPU
Name Value
PassMark - Single thread mark 4242
PassMark - CPU mark 40525

Specifications (specs)


Architecture codename Alder Lake
Launch date 4 Nov 2021
Launch price (MSRP) $564 - $574
Place in performance rating 10
Processor Number i9-12900KF
Series 12th Generation Intel Core i9 Processors
Status Launched
Vertical segment Desktop


64 bit support
L1 cache 1 MB
L2 cache 14 MB
L3 cache 30 MB
Manufacturing process technology Intel 7
Maximum core temperature 100°C
Maximum frequency 5.20 GHz


Max memory channels 2
Maximum memory bandwidth 76.8 GB/s
Maximum memory size 128 GB
Supported memory types Up to DDR5 4800 MT/s Up to DDR4 3200 MT/s


Max number of CPUs in a configuration 1
Package Size 45.0 mm x 37.5 mm
Sockets supported FCLGA1700
Thermal Solution PCG 2020A


Max number of PCIe lanes 20
PCI Express revision 5.0 and 4.0
PCIe configurations Up to 1x16+4, 2x8+4
Scalability 1S Only

Security & Reliability

Execute Disable Bit (EDB)
Intel® OS Guard
Intel® Secure Key technology
Mode-based Execute Control (MBE)
Secure Boot

Advanced Technologies

Enhanced Intel SpeedStep® technology
Idle States
Instruction set extensions Intel SSE4.1, Intel SSE4.2, Intel AVX2
Intel 64
Intel® AES New Instructions
Intel® Hyper-Threading technology
Intel® Optane™ Memory Supported
Intel® Turbo Boost technology
Intel® Volume Management Device (VMD)
Speed Shift technology
Thermal Monitoring


Intel® Virtualization Technology (VT-x)
Intel® Virtualization Technology for Directed I/O (VT-d)
Intel® VT-x with Extended Page Tables (EPT)