| Attribute |
 Intel Core i9-10900K × |  Intel Core i9-9900 × |
| General Information | | |
| Brand | Intel | Intel |
| Series | Intel Core i9 | Intel Core i9 |
| Model | Intel Core i9-10900K | Intel Core i9-9900 |
| CPU Cores and Base Frequency | | |
| CPU Cores | 10 | 8 |
| Frequency (GHz) | 3.7 | 3.1 |
| CPU Threads | 20 | 16 |
| Core architecture | normal | normal |
| Hyperthreading | + | + |
| Overclocking | + | - |
| Turbo (1 Core) (GHz) | 5.3 | 5 |
| Turbo (8 Cores) (GHz) | - | 4 |
| Turbo (10 Cores) (GHz) | 4.9 | - |
| Encryption | | |
| AES-NI | + | + |
| Hardware codec support | | |
| JPEG | Decode / Encode | Decode / Encode |
| h264 | Decode / Encode | Decode / Encode |
| h265 / HEVC (8 bit) | Decode / Encode | Decode / Encode |
| h265 / HEVC (10 bit) | Decode / Encode | Decode / Encode |
| VP8 | Decode / Encode | Decode / Encode |
| AV1 | No | No |
| VC-1 | Decode | Decode |
| VP9 | Decode / Encode | Decode / Encode |
| AVC | Decode / Encode | Decode / Encode |
| Internal Graphics | | |
| GPU name | Intel UHD Graphics 630 | Intel UHD Graphics 630 |
| GPU frequency (GHz) | 0.35 | 0.35 |
| GPU (Turbo) (GHz) | 1.2 | 1.2 |
| Generation | 9 | 9 |
| DirectX Version | 12 | 12 |
| Execution units | 24 | 24 |
| Shader | 192 | 192 |
| Max. GPU Memory (GB) | 64 | 64 |
| Max. displays | 3 | 3 |
| GPU Release date (year) | 2017 | 2017 |
| Memory And PCIe | | |
| Memory type | - | DDR4-2666 |
| Max. Memory (GB) | 128 | 128 |
| PCIe lanes | 16 | 16 |
| PCIe version | 3.0 | 3.0 |
| ECC | - | - |
| Memory channels | 2 | 2 |
| Technical details | | |
| Release date (year) | 2020 | 2019 |
| Technology (Nm) | 14 | 14 |
| Socket | LGA 1200 | LGA 1151-2 |
| Virtualization | | |
| L3-Cache (MB) | 20 | 16 |
| Architecture | Comet Lake | Coffee Lake Refresh |
| Instruction set (ISA) | x86-64 (64 bit) | x86-64 (64 bit) |
| Thermal Management | | |
| Temp junction max (°C) | 100 | 100 |
| TDP down (W) | 95 | - |
| TDP (PL1) (W) | 125 | 65 |
| Benchmarks | | |
| iGPU - FP32 Performance (Single-precision GFLOPS) | 461 | 461 |
| Estimated results for PassMark CPU Mark | 24,090 | 18,644 |
| Geekbench 5, 64bit (Single-Core) | 1,417 | 1,292 |
| Geekbench 5, 64bit (Multi-Core) | 11,344 | 8,047 |
| Cinebench R15 (Single-Core) | 232 | 219 |
| Cinebench R15 (Multi-Core) | 2,668 | 1,931 |
| Cinebench R20 (Single-Core) | 645 | 518 |
| Cinebench R20 (Multi-Core) | 6,419 | 4,346 |
| Cinebench R11.5, 64bit (Single-Core) | - | 2.61 |
| Geekbench 3, 64bit (Single-Core) | - | 6,250 |
| Cinebench R11.5, 64bit (iGPU, OpenGL) | - | 44.1 |
| Blender 2.81 (bmw27) | 126 | - |
| Cinebench R23 (Single-Core) | 1,382 | 1,284 |
| Cinebench R23 (Multi-Core) | 15,945 | 12,205 |