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Intel Core i7-1255U vs Intel Core i7-12850HX: Comparison
Intel Core i7-1255U and Intel Core i7-12850HX separate most on l3 cache: Intel Core i7-1255U at 12 MB, Intel Core i7-12850HX at 32 MB, 63% in favour of Intel Core i7-12850HX. PCIe Lanes splits them by another 50%, again favouring Intel Core i7-12850HX. They match on 15 other specifications, including product line, form factor and codename.
Specs
| Specification |  | |
|---|---|---|
| Brand | Intel | Intel |
| Product Line | Core | Core |
| Form Factor | Laptop | Laptop |
| Model Number | i7-1255U | i7-12850HX |
| Codename | Alder Lake | Alder Lake |
| Release Year | 2022 | 2022 |
| TDP | 15 W | 55 W |
| iGPU | Intel Iris Xe Graphics (reduced EU) | Intel UHD Graphics |
| Market Segment | Laptop | Laptop |
| Socket | BGA 1744 (BGA, soldered) | BGA 1964 (BGA, soldered) |
| Socket Status | Mature | Mature |
| Process Node | 10 nm | 10 nm |
| Performance Cores | 2 | 8 |
| Efficiency Cores | 8 | 8 |
| SMT Enabled | true | true |
| P-Core Base Clock | 1.7 | 2.1 |
| P-Core Boost Clock | 4.7 | 5.0 |
| E-Core Base Clock | 1.2 | 1.5 |
| E-Core Boost Clock | 3.5 | 3.6 |
| L3 Cache | 12 MB-62% | 32 MB |
| Base Power | 15 W | 55 W |
| Max Turbo Power | 55 | 157 |
| Memory Type | DDR5 or DDR4 | DDR5 or DDR4 |
| Max Memory Speed | 4800 | 4800 |
| Memory Channels | 2 | 2 |
| Max Memory Capacity | 64 | 128 |
| ECC Support | false | true |
| Integrated Graphics | Yes | Yes |
| iGPU Model | Intel Iris Xe Graphics | Intel UHD Graphics |
| iGPU Compute Units | 96 | 32 |
| PCIe Generation | PCIe 4.0 | PCIe 5.0 |
| PCIe Lanes | 10-50% | 20 |
| Retail Availability | Soldered Only | Soldered Only |
| Cores | 10 | 16 |
| Threads | 12 | 24 |
| Architecture | Alder Lake | Alder Lake |
Verdict
Intel Core i7-1255U
7.7 / 10 Expert Rating
The Intel Core i7-1255U prioritizes battery life and portability, fitting thin business and everyday laptops rather than performance-first designs.
Intel Core i7-12850HX
8.6 / 10 Expert Rating
The Intel Core i7-12850HX brings desktop-class core counts to a mobile chassis, a strong pick for high-end gaming and creator laptops.