Intel · 2025
Intel Core Ultra 7 255HX
The Intel Core Ultra 7 255HX is a 20-core mobile processor based on the Arrow Lake microarchitecture, released in 2025.
The Intel Core Ultra 7 255HX is a high-performance mobile processor from Intel's Arrow Lake family, launched in 2025. It features 20 cores (8 performance cores and 12 efficiency cores) with 20 threads, supporting a base clock of 2.4 GHz and a boost clock of 5.2 GHz. The processor includes 36 MB of L2 cache and 30 MB of L3 cache, built on a 3 nm process node. It has a TDP of 55 W and a maximum turbo power of 160 W, using the FCBGA2114 socket. Memory support includes up to DDR5 6400 MT/s across two channels, without ECC support. The integrated Intel Graphics handles display output. The CPU provides 24 PCIe lanes (PCIe 5.0 and 4.0) and supports instruction sets SSE4.1, SSE4.2, and AVX2. The multiplier is locked, preventing overclocking. This processor is designed for high-end laptops and mobile workstations.
Benchmarks
| Blender Open Data score | 395.61 samples/min |
|---|---|
| Nero Score AI | 3,530 images/min |
| Nero Score AVC encode | 2,374 fps |
Specifications
| Microarchitecture | Arrow Lake |
|---|---|
| Cores | 20 |
| P-cores | 8 |
| E-cores | 12 |
| Threads | 20 |
| Base clock | 2.4 GHz |
| Boost clock | 5.2 GHz |
| L2 cache (total) | 36 MB |
| L3 cache | 30 MB |
| Process node | 3 nm |
| TDP / base power | 55 W |
| Max turbo power | 160 W |
| Socket | FCBGA2114 |
| Memory support | Up to DDR5 6400 MT/s |
| Memory channels | 2 |
| ECC memory support | No |
| Integrated graphics | Intel Graphics |
| PCIe lanes (CPU) | 24 |
| PCIe version | 5.0 and 4.0 |
| Instruction sets | Intel SSE4.1, Intel SSE4.2, Intel AVX2 |
| Unlocked multiplier | No |
| Release date | 2025-01-01 |
| Release year | 2025 |