Intel Core i7 1255U vs i5 12450H
We compared two laptop CPUs: the 1.7 GHz Intel Core i7 1255U with 10-cores against the 2 GHz i5 12450H with 8-cores. On this page, you'll find out which processor has better performance in benchmarks, games and other useful information.
Review
Single-Core Performance
Performance in single-threaded apps and benchmarks
Performance
Measure performance when all cores are involved
Power Efficiency
The efficiency score of electricity consumption
NanoReview Final Score
Generic CPU rating
Key Differences
Advantages of Intel Core i7 1255U
- Has 2 more physical cores
- 7% 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)
By purchasing through links on this site, we may receive a commission from Amazon. This does not affect our assessment methodology.
Specifications
General
| Vendor | Intel | Intel |
| Released | February 23, 2022 | January 4, 2022 |
| Type | Laptop | Laptop |
| instruction set | x86-64 | x86-64 |
| Codename | Alder Lake | Alder Lake |
| Model number | i7-1255U | i5-12450H |
| Integrated GPU | Iris Xe Graphics (96EU) | UHD Graphics (48EU) |
CPU
| P-Cores | 2 | 4 |
| P-Threads | 4 | 8 |
| Base Frequency (P) | 1.7 GHz | 2 GHz |
| Turbo Boost Frequency (P) | 4.7 GHz | 4.4 GHz |
| E-Cores | 8 | 4 |
| E-Threads | 8 | 4 |
| Base Frequency (E) | 1.2 GHz | 1.5 GHz |
| Turbo Boost Frequency (E) | 3.5 GHz | 3.3 GHz |
| Total Cores | 10 | 8 |
| Total Threads | 12 | 12 |
| Bus Frequency | 100 MHz | 100 MHz |
| Multiplier | 17x | 20x |
| L1 Cache | 80K (per core) | 80K (per core) |
| L2 Cache | 1280K (per core) | 1280K (per core) |
| L3 Cache | 12MB (shared) | 12MB (shared) |
| Unlocked Multiplier | No | No |
Package
| Fabrication process | 10 nm | 10 nm |
| Socket | BGA-1744 | BGA-1744 |
| TDP | 12-15 W (configurable) | 35-45 W (configurable) |
| Max. Boost TDP | 55 W | 95 W |
| Peak temperature | 100°C | 100°C |
iGPU
| Integrated Graphics | Intel Iris Xe Graphics (96EU) | Intel UHD Graphics (48EU) |
| GPU Base Clock | 300 MHz | 300 MHz |
| GPU Boost Clock | 1250 MHz | 1200 MHz |
| Shading Units | 768 | 384 |
| TMUs | 48 | 24 |
| ROPs | 24 | 12 |
| Execution Units | 96 | 48 |
| TGP | 15 W | 15 W |
iGPU FLOPS
Memory Support
| Memory types | DDR5-4800, DDR4-3200, LPDDR5-5200, LPDDR4x-4267 | DDR5-4800, DDR4-3200, LPDDR5-5200, LPDDR4x-4267 |
| Memory Size | 64 GB | 64 GB |
| Max. Memory Channels | 2 | 2 |
| ECC Support | No | No |
Misc
| Official site | Intel Core i7 1255U official page | Intel Core i5 12450H official page |
| PCI Express Version | 4.0 | 4.0 |
| PCI Express Lanes | 20 | 28 |
Cast your vote
Total votes: 85