| Attribute |
Intel Celeron 3955U × |
Intel Celeron J4005 × |
| General Information | | |
| Brand | Intel | Intel |
| Series | Intel Celeron | Intel Celeron |
| Model | Intel Celeron 3955U | Intel Celeron J4005 |
| CPU Cores and Base Frequency | | |
| CPU Cores | 2 | 2 |
| Frequency (GHz) | 2 | 2 |
| CPU Threads | 2 | 2 |
| Core architecture | normal | normal |
| Hyperthreading | - | - |
| Overclocking | - | - |
| Turbo (1 Core) (GHz) | - | 2.7 |
| Turbo (2 Cores) (GHz) | - | 2.7 |
| Encryption | | |
| AES-NI | + | + |
| Hardware codec support | | |
| JPEG | Decode | Decode / Encode |
| h264 | Decode / Encode | Decode / Encode |
| h265 / HEVC (8 bit) | Decode / Encode | Decode / Encode |
| h265 / HEVC (10 bit) | Decode | Decode / Encode |
| VP8 | Decode / Encode | Decode / Encode |
| AV1 | No | No |
| VC-1 | Decode | Decode |
| VP9 | Decode | Decode / Encode |
| AVC | Decode / Encode | Decode / Encode |
| Internal Graphics | | |
| GPU name | Intel HD Graphics 510 | Intel UHD Graphics 600 |
| GPU frequency (GHz) | 0.3 | 0.25 |
| GPU (Turbo) (GHz) | 0.9 | 0.7 |
| Generation | 9 | 9 |
| DirectX Version | 12 | 12 |
| Execution units | 12 | 12 |
| Shader | 96 | 96 |
| Max. GPU Memory (GB) | 32 | 8 |
| Max. displays | 3 | 3 |
| GPU Release date (year) | 2015 | 2017 |
| Memory And PCIe | | |
| Memory type | DDR4-2133LPDDR3-1866 | DDR4-2400 |
| Max. Memory (GB) | - | 8 |
| PCIe lanes | 10 | 6 |
| PCIe version | 2.0 | 2.0 |
| ECC | + | - |
| Memory channels | 2 | 2 |
| Technical details | | |
| Release date (year) | 2015 | 2017 |
| Technology (Nm) | 14 | 14 |
| Socket | - | BGA 1090 |
| Virtualization | | |
| L3-Cache (MB) | 2 | 4 |
| Architecture | Skylake | Gemini Lake |
| Instruction set (ISA) | x86-64 (64 bit) | x86-64 (64 bit) |
| Thermal Management | | |
| TDP (PL1) (W) | 15 | 10 |
| Benchmarks | | |
| iGPU - FP32 Performance (Single-precision GFLOPS) | 173 | 134 |
| Estimated results for PassMark CPU Mark | 1,842 | 1,560 |
| Geekbench 5, 64bit (Single-Core) | 498 | 377 |
| Geekbench 5, 64bit (Multi-Core) | 917 | 649 |
| Cinebench R15 (Single-Core) | 85 | 79 |
| Cinebench R15 (Multi-Core) | 159 | 149 |
| Cinebench R11.5, 64bit (Single-Core) | 0.96 | 0.92 |
| Cinebench R11.5, 64bit (Multi-Core) | 1.78 | 1.75 |
| Geekbench 3, 64bit (Single-Core) | 2,104 | 2,094 |
| Geekbench 3, 64bit (Multi-Core) | 3,778 | 3,638 |
| Cinebench R11.5, 64bit (iGPU, OpenGL) | 15.1 | - |