| Attribute |
Intel Core i9-7940X × | 
Intel Xeon E5-2680 v3 × |
| General Information | | |
| Brand | Intel | Intel |
| Series | Intel Core i9 | Intel Xeon E5 |
| Model | Intel Core i9-7940X | Intel Xeon E5-2680 v3 |
| CPU Cores and Base Frequency | | |
| CPU Cores | 14 | 12 |
| Frequency (GHz) | 3.1 | 2.5 |
| CPU Threads | 28 | 24 |
| Core architecture | normal | normal |
| Hyperthreading | + | + |
| Overclocking | + | - |
| Turbo (1 Core) (GHz) | 4.3 | 3.3 |
| Turbo (12 Cores) (GHz) | - | 2.9 |
| Turbo (14 Cores) (GHz) | 3.7 | - |
| 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 | DDR4-2133 |
| PCIe lanes | 44 | 40 |
| PCIe version | 3.0 | 3.0 |
| ECC | - | + |
| Memory channels | 4 | 4 |
| Technical details | | |
| Release date (year) | 2017 | 2014 |
| Technology (Nm) | 14 | 22 |
| Socket | LGA 2066 | LGA 2011-3 |
| Virtualization | | |
| L3-Cache (MB) | 19 | 30 |
| Architecture | Skylake-X | Haswell E |
| Instruction set (ISA) | x86-64 (64 bit) | x86-64 (64 bit) |
| Thermal Management | | |
| TDP (PL1) (W) | 165 | 120 |
| Benchmarks | | |
| Estimated results for PassMark CPU Mark | 25,430 | 18,462 |
| Geekbench 5, 64bit (Single-Core) | 1,158 | 706 |
| Geekbench 5, 64bit (Multi-Core) | 12,964 | 7,793 |
| Cinebench R15 (Single-Core) | 188 | 127 |
| Cinebench R15 (Multi-Core) | 2,849 | 1,850 |
| Cinebench R20 (Single-Core) | - | 263 |
| Cinebench R20 (Multi-Core) | - | 3,299 |
| Cinebench R11.5, 64bit (Single-Core) | 2.19 | 1.58 |
| Cinebench R11.5, 64bit (Multi-Core) | 31.21 | 18.84 |
| Geekbench 3, 64bit (Single-Core) | 4,876 | 3,429 |
| Geekbench 3, 64bit (Multi-Core) | 53,446 | 39,324 |
| Blender 2.81 (bmw27) | 121.7 | - |