Key Differences
Advantages of Intel Core Ultra 7 255HX
Advantages of Intel Core Ultra 5 125H
Specifications
Performance
| L3 Cache | 30MB (shared) | 18MB (shared) |
| Integrated GPU | Arc Graphics (4-Cores) | Arc Graphics (7-Cores) |
| TGP | 14 W | 28 W |
Display
| Type | Laptop | Laptop |
Other
| File compression | 1140 MB/sec | 1090 MB/sec |
| Clang compilation | 149.8 Klines/sec | 78.8 Klines/sec |
| HTML 5 Browser | 312.2 pages/sec | 273.9 pages/sec |
| PDF Renderer | 423.9 Mpixels/sec | 321.4 Mpixels/sec |
| Text processing | 335.6 pages/sec | 226.1 pages/sec |
| Background blur | 64.1 images/sec | 42.4 images/sec |
| Photo processing | 111.8 images/sec | 103.8 images/sec |
| Ray tracing | 31.1 Mpixels/sec | 17.6 Mpixels/sec |
| Integer math | 131 GOps/sec | 69.3 GOps/sec |
| Floating point math | 167.3 GOps/sec | 51 GOps/sec |
| Find prime numbers | 415M Primes/sec | 87M Primes/sec |
| Random string sorting | 65M Strings/sec | 27M Strings/sec |
| Data encryption | 41 GBytes/sec | 14 GBytes/sec |
| Data compression | 536.9 MBytes/sec | 232.3 MBytes/sec |
| Physics | 3060 Frames/sec | 1405 Frames/sec |
| Extended instructions | 43.1B Matrices/sec | 13.5B Matrices/sec |
| Cinebench 2024 / Watt | 30.8 PPW | 23.9 PPW |
| Geekbench 6 Multi / Watt | 289.5 PPW | 383.8 PPW |
| Passmark CPU Mark / Watt | 907.9 PPW | 742.5 PPW |
| Blender / Watt | 7.11 PPW | 4.9 PPW |
| Vendor | Intel | Intel |
| Released | January 6, 2025 | December 14, 2023 |
| Instruction Set | x86-64 | x86-64 |
| Codename | Arrow Lake | Meteor Lake |
| Model number | 255HX | 125H |
| Rival Equivalent | AMD Ryzen AI Max Pro 380 | AMD Ryzen 5 8640HS |
| P-Cores | 8 | 4 |
| P-Threads | 8 | 8 |
| Base Frequency (P) | 2.4 GHz | 1.2 GHz |
| Turbo Boost Frequency (P) | 5.2 GHz | 4.5 GHz |
| E-Cores | 12 | 10 |
| E-Threads | 12 | 10 |
| Base Frequency (E) | 1.8 GHz | 0.7 GHz |
| Turbo Boost Frequency (E) | 4.5 GHz | 3.6 GHz |
| Total Cores | 20 | 14 |
| Total Threads | 20 | 18 |
| Bus Frequency | 100 MHz | 100 MHz |
| Multiplier | 24x | 12x |
| L1 Cache | 112K (per core) | 112K (per core) |
| L2 Cache | 2MB (per core) | 2MB (per core) |
| Unlocked Multiplier | Yes | No |
| Fabrication Process | 3 nm | 7 nm |
| TDP (PL1) | 45-55 W (configurable) | 20-28 W (configurable) |
| Max. Boost TDP (PL2) | 160 W | 115 W |
| Socket | FCBGA-2114 | FCBGA-2049 |
| Peak Temperature | 105°C | 110°C |
| Integrated Graphics | Arc Graphics (4-Cores) | Arc Graphics (7-Cores) |
| GPU Base Clock | 300 MHz | 300 MHz |
| GPU Boost Clock | 1850 MHz | 2200 MHz |
| Shading Units | 512 | 896 |
| TMUs | 32 | 56 |
| ROPs | 16 | 24 |
| Execution Units | 64 | 112 |
| Memory Types | - DDR5-6400 | - LPDDR5-7467 - LPDDR5x-7467 - DDR5-5600 |
| Max. Memory Size | 256 GB | 96 GB |
| Memory Channels | 2 | 2 |
| ECC Support | Yes | No |
| Official Site | Intel Core Ultra 7 255HX official page | Intel Core Ultra 5 125H official page |
| PCI Express Version | 5.0 | 5.0 |
| PCI Express Lanes | 24 | 28 |