Intel Core i9 12900H vs i7 1355U
55
out of 100
VS
49
out of 100
We compared two laptop CPUs: the 2.5 GHz Intel Core i9 12900H with 14-cores against the 1.7 GHz i7 1355U with 10-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
Multi-Core Performance
Measure performance when all cores are involved
Power Efficiency
The efficiency score of power consumption
Integrated Graphics
iGPU capabilities for gaming and 3D-intensive tasks
Choose your main usage scenario to recalculate the Final Score and see which CPU suits your needs.
Key Differences
Advantages of Intel Core i9 12900H
- Has 12 MB larger L3 cache size, helping fully utilize a high-end GPU in gaming
- Has 4 more physical cores
Advantages of Intel Core i7 1355U
- Supports up to 96 GB DDR5-5200 RAM
- Newer - released 1 year later
Test in Benchmarks
Comparing the performance of CPUs across various tasksCinebench
Cinebench 2024 (Single)
Cinebench 2024 (Multi)
Cinebench Scores (#157th place)
GeekBench v6
Geekbench 6 (Single-Core)
Geekbench 6 (Multi-Core)
| File compression | 898.1 MB/sec | 519.7 MB/sec |
| Clang compilation | 97.6 Klines/sec | 58.7 Klines/sec |
| HTML 5 Browser | 270 pages/sec | 159 pages/sec |
| PDF Renderer | 325.3 Mpixels/sec | 219.7 Mpixels/sec |
| Text processing | 248.3 pages/sec | 221.5 pages/sec |
| Background blur | 52.7 images/sec | 33.4 images/sec |
| Photo processing | 94.2 images/sec | 64.2 images/sec |
| Ray tracing | 23.8 Mpixels/sec | 12.5 Mpixels/sec |
PassMark
Passmark CPU (Single-Core)
Passmark CPU (Multi-Core)
| Integer math | 91.3 GOps/sec | 50.4 GOps/sec |
| Floating point math | 66 GOps/sec | 33.9 GOps/sec |
| Find prime numbers | 104M Primes/sec | 48M Primes/sec |
| Random string sorting | 34.4M Strings/sec | 17.2M Strings/sec |
| Data encryption | 18 GBytes/sec | 9.6 GBytes/sec |
| Data compression | 308.2 MBytes/sec | 152.3 MBytes/sec |
| Physics | 1700 Frames/sec | 844 Frames/sec |
| Extended instructions | 18.4B Matrices/sec | 8.5B Matrices/sec |
Blender
Blender CPU
Performance Per Watt
| Cinebench 2024 / Watt | 21.9 PPW | 33.9 PPW |
| Geekbench 6 Multi / Watt | 265.9 PPW | 503.5 PPW |
| Passmark CPU Mark / Watt | 591 PPW | 923.3 PPW |
| Blender / Watt | 4.67 PPW | 6.32 PPW |
These are rough calculations, as most CPUs surpass PL1 TDP wattage even in multicore workloads.
Recent User Tests
Intel Core i9 12900H
| Date | Benchmark | Result |
|---|---|---|
| ๐ 2025-11-21 (Robert L) | Cinebench 2024 | 104 / 765 |
| ๐ 2025-05-02 (Toksik Vegeta) | Cinebench 2024 | 107 / 984 |
Intel Core i7 1355U
| Date | Benchmark | Result |
|---|---|---|
| ๐ 2026-04-28 (Linode) | Geekbench 6 CPU | 2435 / 7355 |
Specifications
Full technical specification of Intel Core i9 12900H and i7 1355UGeneral
| Vendor | Intel | Intel |
| Released | January 4, 2022 | January 3, 2023 |
| Type | Laptop | Laptop |
| Instruction Set | x86-64 | x86-64 |
| Codename | Alder Lake | Raptor Lake |
| Model number | i9-12900H | i7-1355U |
| Integrated GPU | Iris Xe Graphics (96EU) | Iris Xe Graphics (96EU) |
| Rival Equivalent | - AMD Ryzen 9 6900HS | - |
| Successor | - Intel Core Ultra 9 288V | - Intel Core Ultra 7 255U |
Intel CPU rating (115th and 159th place)
CPU
| P-Cores | 6 | 2 |
| P-Threads | 12 | 4 |
| Base Frequency (P) | 2.5 GHz | 1.7 GHz |
| Turbo Boost Frequency (P) | 5 GHz | 5 GHz |
| E-Cores | 8 | 8 |
| E-Threads | 8 | 8 |
| Base Frequency (E) | 1.8 GHz | 1.2 GHz |
| Turbo Boost Frequency (E) | 3.8 GHz | 3.7 GHz |
| Total Cores | 14 | 10 |
| Total Threads | 20 | 12 |
| Bus Frequency | 100 MHz | 100 MHz |
| Multiplier | 25x | 17x |
| L1 Cache | 80K (per core) | 80K (per core) |
| L2 Cache | 1280K (per core) | 1280K (per core) |
| L3 Cache | 24MB (shared) | 12MB (shared) |
| Unlocked Multiplier | No | No |
Package
| Fabrication Process | 10 nm | 10 nm |
| TDP (PL1) | 35-45 W (configurable) | 12-15 W (configurable) |
| Max. Boost TDP (PL2) | 115 W | 55 W |
| Socket | BGA-1744 | BGA-1744 |
| Peak Temperature | 100ยฐC | 100ยฐC |
Laptop processors ranking (#152nd place)
iGPU
| Integrated Graphics | Intel Iris Xe Graphics (96EU) | Intel Iris Xe Graphics (96EU) |
| GPU Base Clock | 300 MHz | 300 MHz |
| GPU Boost Clock | 1450 MHz | 1300 MHz |
| Shading Units | 768 | 768 |
| TMUs | 48 | 48 |
| ROPs | 24 | 24 |
| Execution Units | 96 | 96 |
| TGP | 15 W | 15 W |
iGPU FLOPS
Memory Support
| Memory Types | - DDR5-4800 - DDR4-3200 - LPDDR5-5200 - LPDDR4x-4267 |
- DDR5-5200 - DDR4-3200 - LPDDR5-6400 - LPDDR5x-6400 - LPDDR4x-4267 |
| Max. Memory Size | 64 GB | 96 GB |
| Memory Channels | 2 | 2 |
| ECC Support | No | No |
Misc
| Official Site | Intel Core i9 12900H official page | Intel Core i7 1355U official page |
| PCI Express Version | 4.0 | 4.0 |
| PCI Express Lanes | 28 | 20 |
Cast your vote
Total votes: < 1