| Attribute |
Intel Core i9-9900KF × |
Intel Core i9-7900X × |
| General Information | | |
| Brand | Intel | Intel |
| Series | Intel Core i9 | Intel Core i9 |
| Model | Intel Core i9-9900KF | Intel Core i9-7900X |
| CPU Cores and Base Frequency | | |
| CPU Cores | 8 | 10 |
| Frequency (GHz) | 3.6 | 3.3 |
| CPU Threads | 16 | 20 |
| Core architecture | normal | normal |
| Hyperthreading | + | + |
| Overclocking | + | + |
| Turbo (1 Core) (GHz) | 5 | 4.3 |
| Turbo (8 Cores) (GHz) | 4.7 | - |
| Turbo (10 Cores) (GHz) | - | 4 |
| Encryption | | |
| AES-NI | + | + |
| Hardware codec support | | |
| JPEG | No | No |
| h264 | No | No |
| h265 / HEVC (8 bit) | No | No |
| h265 / HEVC (10 bit) | No | No |
| VP8 | No | No |
| AV1 | No | No |
| VC-1 | No | No |
| VP9 | No | No |
| AVC | No | No |
| Memory And PCIe | | |
| Memory type | DDR4-2666 | DDR4-2666 |
| Max. Memory (GB) | 128 | - |
| PCIe lanes | 16 | 44 |
| PCIe version | 3.0 | 3.0 |
| ECC | - | - |
| Memory channels | 2 | 4 |
| Technical details | | |
| Release date (year) | 2019 | 2017 |
| Technology (Nm) | 14 | 14 |
| Socket | LGA 1151-2 | LGA 2066 |
| Virtualization | | |
| L3-Cache (MB) | 16 | 14 |
| Architecture | Coffee Lake Refresh | Skylake-X |
| Instruction set (ISA) | x86-64 (64 bit) | x86-64 (64 bit) |
| Thermal Management | | |
| Temp junction max (°C) | 100 | - |
| TDP (PL2) (W) | 119 | - |
| TDP (PL1) (W) | 95 | 140 |
| Benchmarks | | |
| Estimated results for PassMark CPU Mark | 20,192 | 21,870 |
| Geekbench 5, 64bit (Single-Core) | 1,342 | 1,133 |
| Geekbench 5, 64bit (Multi-Core) | 8,779 | 10,199 |
| Cinebench R15 (Single-Core) | 219 | 188 |
| Cinebench R15 (Multi-Core) | 2,245 | 2,194 |
| Cinebench R20 (Single-Core) | 518 | 461 |
| Cinebench R20 (Multi-Core) | 4,995 | 5,286 |
| Cinebench R11.5, 64bit (Single-Core) | 2.61 | 2.19 |
| Cinebench R11.5, 64bit (Multi-Core) | 21.2 | 24.1 |
| Geekbench 3, 64bit (Single-Core) | 6,250 | 4,876 |
| Geekbench 3, 64bit (Multi-Core) | 35,769 | 41,255 |
| Blender 2.81 (bmw27) | 165.4 | 137.7 |
| Cinebench R23 (Single-Core) | 1,284 | 1,222 |
| Cinebench R23 (Multi-Core) | 12,450 | 14,998 |