intel core i5 1240u vs intel core i7 1255u
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We compared two CPUs Intel Core i5 1240U (Laptop) 10-cores against Intel Core i7 1255U (Laptop) 10-cores. In this comparison page, we check which of these two processor has better performance in benchmark results, Games, architecture, price and other useful information.
Review
Single-Core Performance
Performance in single-threaded apps and benchmarks
Performance
Measure performance when all cores are involved
Key Differences
Advantages of Intel Core i5 1240U
- Consumes up to 40% less energy than the Intel Core i7 1255U – 9 vs 15 Watt
Advantages of Intel Core i7 1255U
- 6% higher Turbo Boost frequency (4.7 GHz vs 4.4 GHz)
Benchmarks
Cinebench R23 (Single-Core)
Cinebench R23 (Multi-Core)
Passmark CPU (Single-Core)
Passmark CPU (Multi-Core)
Geekbench 5 (Single-Core)
Geekbench 5 (Multi-Core)
Specifications
General
| Intel Core i5 1240U | Intel Core i7 1255U | |
| Vendor | Intel | Intel |
| Released | January 4 2022 | January 4 2022 |
| Type | Laptop | Laptop |
| instruction set | x86-64 | x86-64 |
| Codename | Alder Lake-U | Alder Lake-U |
| Socket | Intel BGA 1781 | FCBGA1744 |
| Integrated GPU | Intel® Iris® Xe Graphics eligible | Intel® Iris® Xe Graphics eligible |
Performance
| Intel Core i5 1240U | Intel Core i7 1255U | |
| Cores | 10 | 10 |
| Threads | 12 | 12 |
| Base Frequency | 1.1 GHz | 1.7 GHz |
| Turbo Boost Frequency | 4.4 GHz | 4.7 GHz |
| L1 Cache | 80K (per core) | 80K (per core) |
| L2 Cache | 1.25 MB (per core) | 1.25 MB (per core) |
| L3 Cache | 12 MB (shared) | 12 MB (shared) |
Power
| Intel Core i5 1240U | Intel Core i7 1255U | |
| Fabrication process | Intel 7 nm | Intel 7 nm |
| Power consumption (TDP) | 9 W | 15 W |
| Max. temperature | 100°C | 100°C |
Memory support
| Intel Core i5 1240U | Intel Core i7 1255U | |
| Memory types | LPDDR5-5200, LPDDR4x-4267 | DDR5-4800, DDR4-3200, LPDDR5-5200, LPDDR4x-4267 |
| Memory Size | 64 GB | 64 GB |
| Max. Memory Channels | 2 | 2 |
| Max. Memory Bandwidth | - | - |
| ECC Support | No | No |
iGPU
| Intel Core i5 1240U | Intel Core i7 1255U | |
| Integrated Graphics | Intel® Iris® Xe Graphics eligible | Intel® Iris® Xe Graphics eligible |
| GPU Base Clock | 300 MHz | 300 MHz |
| GPU Boost Clock | 900 MHz | 1.25 MHz |
| Shading Units | 640 | 768 |
| TMUs | 40 | 48 |
| ROPs | 20 | 24 |
| Execution Units | 80 | 96 |
| TGP | 15 W | 15 W |
iGPU FLOPS
Misc
| Intel Core i5 1240U | Intel Core i7 1255U | |
| Official site | Intel Core i5 1240U official page | Intel Core i7 1255U official page |
| PCI Express Version | 4 | 4 |
| PCI Express Lanes | 14 | 20 |