Intel Core i9 12900K
- Cores: 16
- L3 cache: 30MB (shared)
- TDP: 125 W (max. boost up to 241 W)
- Transistor size: 10 nm
Core i9 12900K - desktop processor produced by Intel for socket LGA-1700 that has 16 cores and 24 threads. The base clock frequency of the CPU is 32000 MHz, but due to Turbo Boost technology, it can perform up to 5100 MHz. The size of the L3 cache is 30 MB. Please note that this chip has integrated graphics Intel UHD Graphics 770.
Review
Compare Intel Core i9 12900K with other CPUs
Test in Benchmarks
Performance test of Intel Core i9 12900K in benchmarksCinebench
Cinebench Scores - 63rd place
GeekBench v6
| File compression | 1260 MB/sec |
| Clang compilation | 146.1 Klines/sec |
| HTML 5 Browser | 414.2 pages/sec |
| PDF Renderer | 480.2 Mpixels/sec |
| Text processing | 273.2 pages/sec |
| Background blur | 69.4 images/sec |
| Photo processing | 147.8 images/sec |
| Ray tracing | 34.4 Mpixels/sec |
PassMark
| Integer math | 139.2 GOps/sec |
| Floating point math | 105.4 GOps/sec |
| Find prime numbers | 145M Primes/sec |
| Random string sorting | 57.1M Strings/sec |
| Data encryption | 29.5 GBytes/sec |
| Data compression | 536.7 MBytes/sec |
| Physics | 2203 Frames/sec |
| Extended instructions | 33.6B Matrices/sec |
Blender
Performance Per Watt
| Cinebench 2024 / Watt | 12.2 PPW |
| Geekbench 6 Multi / Watt | 136 PPW |
| Passmark CPU Mark / Watt | 328.9 PPW |
| Blender / Watt | 2.93 PPW |
These are rough calculations, as most CPUs surpass PL1 TDP wattage even in multicore workloads.
Recent User Tests
| Date | Benchmark | Result |
|---|---|---|
| π 2025-11-12 (ElNils) | Cinebench 2024 | 114 / 1497 |
| π 2025-09-20 (Jarx) | Geekbench 6 CPU | 2811 / 18033 |
| π 2025-05-24 (unsorted) | Cinebench 2024 | 109 / 1339 |
| π 2025-04-03 (AdKraemer) | Cinebench 2024 | 113 / 1414 |
| π 2025-03-20 (Lethal) | Cinebench 2024 | 116 / 1571 |
| π 2025-01-07 (_..Π€Π°ΡΡΠΎΠ²ΡΠΉ.._) | Cinebench 2024 | 127 / 1660 |
| π 2024-10-23 (Freakshow) | Cinebench 2024 | 127 / 1643 |
| π 2024-04-18 (Yusuf Wakil) | Cinebench 2024 | 109 / 1425 |
Specifications
Core i9 12900K technical specificationsGeneral
| Vendor | Intel |
| Released | October 27, 2021 |
| Type | Desktop |
| Instruction Set | x86-64 |
| Codename | Alder Lake |
| Model number | i9-12900K |
| Integrated GPU | UHD Graphics 770 |
| AMD Equivalent | - AMD Ryzen 9 5950X |
| Successor | - Intel Core Ultra 9 285K |
Intel CPU rating - 53rd place
CPU
| P-Cores | 8 |
| P-Threads | 16 |
| Base Frequency (P) | 3,2 GHz |
| Turbo Boost Frequency (P) | 5.1 GHz |
| E-Cores | 8 |
| E-Threads | 8 |
| Base Frequency (E) | 2.4 GHz |
| Turbo Boost Frequency (E) | 3.9 GHz |
| Total Cores | 16 |
| Total Threads | 24 |
| Bus Frequency | 100 MHz |
| Multiplier | 32x |
| L1 Cache | 64K (per core) |
| L2 Cache | 14MB (shared) |
| L3 Cache | 30MB (shared) |
| Unlocked Multiplier | Yes |
Package
| Fabrication Process | 10 nm |
| TDP (PL1) | 125 W |
| Max. Boost TDP (PL2) | 241 W |
| Socket | LGA-1700 |
| Peak Temperature | 100Β°C |
Desktop CPU ranking - 54th place
iGPU
| Integrated Graphics | Intel UHD Graphics 770 |
| GPU Base Clock | 300 MHz |
| GPU Boost Clock | 1550 MHz |
| Shading Units | 256 |
| TMUs | 16 |
| ROPs | 8 |
| Execution Units | 32 |
| TGP | 15 W |
See also: Intel UHD Graphics 770 β integrated graphics of Intel Core i9 12900K
Memory Support
| Memory Types | - DDR5-4800 - DDR4-3200 |
| Max. Memory Size | 128 GB |
| Memory Channels | 2 |
| Max. Memory Bandwidth | 76.8 GB/s |
| ECC Support | Yes |
Misc
| Official Site | Intel Core i9 12900K official page |
| PCI Express Version | 5.0 |
| PCI Express Lanes | 20 |
| Technologies | - Compute: ABM, ADX, BMI1, BMI2, CLMUL, F16C, SHA
- Performance: EIST, TBT 2.0, TBT 3.0, TSX
- Virtualization: VT-d, VT-x
- Security: RDRAND, TXT, XD bit |