Key facts
Production status: Active
Release date: 2022-02-23
Cores / Threads: 10 / 12
Base clock: 1700 MHz
Turbo clock: 4700 MHz
TDP: 15 W
Process: 10 nm
Codename: Alder Lake-U
Generation: Core i7 (Alder Lake-U)
All available specs
| Field | Value |
|---|---|
| name | Core i7-1255U |
| Socket | Intel BGA 1744 |
| Foundry | Intel |
| Process Size | 10 nm |
| Package | FC-BGA16F |
| Market | Mobile |
| Production Status | Active |
| Release Date | Feb 23rd, 2022 |
| Part# | SRLFP |
| Frequency | 1700 MHz |
| Turbo Clock | up to 4.7 GHz |
| Base Clock | 100 MHz |
| Multiplier | 17.0x |
| Multiplier Unlocked | No |
| Codename | Alder Lake-U |
| Generation | Core i7 (Alder Lake-U) |
| Memory Support | DDR4, DDR5 |
| ECC Memory | No |
| # of Cores | 10 |
| # of Threads | 12 |
| SMP # CPUs | 1 |
| Integrated Graphics | Iris Xe 96EU |
| Cache L1 | 80 KB (per core) |
| Cache L2 | 1.25 MB (per core) |
| Features | MMX, SSE, SSE2, SSE3, SSSE3, SSE4.2, AVX, AVX2, FMA3, SHA, EIST, Intel 64, XD bit, VT-x, VT-d, AES-NI, TSX, TXT, CLMUL, F16C, BMI1, BMI2, ABM, ADX, RdRand, TBT 2.0 |
| Notes | Iris Xe dynamic frequency: 1250MHz |
| Memory Bus | Dual-channel |
| tJMax | 100°C |
| DDR4 Speed | 3200 MT/s |
| LPDDR5 Speed | 5200 MT/s |
| PCI-Express | Gen 4, 20 Lanes (CPU only) |
| Cache L3 | 12 MB (shared) |
| PL1 | 15 W |
| PL2 | 55 W |
| E-Core Frequency | 1200 MHz up to 3.5 GHz |
| LPDDR4x Speed | 4267 MT/s |
| Hybrid Cores | P-Cores: 2 E-Cores: 8 |
| E-Core L1 | 96 KB (per core) |
| E-Core L2 | 2 MB (per module) |
| DDR5 Speed | 4800 MT/s |
| Benchmark rank | 580 |
| Benchmark samples | 174 |
| Benchmark price | 426 |
| Benchmark category | Laptop |
| Benchmark socket | FCBGA1744 |
| Benchmark date | 2022-03-01 |
| Benchmark TDP (W) | 15 |
| Benchmark base (MHz) | 1700 |
| Benchmark turbo (MHz) | 4700 |
| Benchmark cores | 2 |
| Benchmark threads per core | 2 |
| Benchmark threads | 4 |