Intel Core i7 1355U vs AMD Ryzen 7 7840HS
49
out of 100
VS
61
out of 100
We compared two laptop CPUs: the 1.7 GHz Intel Core i7 1355U with 10-cores against the 3.8 GHz AMD Ryzen 7 7840HS 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
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 i7 1355U
- Has 2 more physical cores
Advantages of AMD Ryzen 7 7840HS
- Supports up to 256 GB DDR5-5600 RAM
- More modern manufacturing process β 4 versus 10 nanometers
- More powerful Radeon 780M integrated graphics: 4.1 vs 2 TFLOPS
- Has 4 MB larger L3 cache size
- 2% higher Turbo Boost frequency (5.1 GHz vs 5 GHz)
Test in Benchmarks
Comparing the performance of CPUs across various tasksCinebench
Cinebench 2024 (Single)
Cinebench 2024 (Multi)
Cinebench Scores (#182nd place)
GeekBench v6
Geekbench 6 (Single-Core)
Geekbench 6 (Multi-Core)
| File compression | 519.7 MB/sec | 1120 MB/sec |
| Clang compilation | 58.7 Klines/sec | 102.5 Klines/sec |
| HTML 5 Browser | 159 pages/sec | 217.2 pages/sec |
| PDF Renderer | 219.7 Mpixels/sec | 350 Mpixels/sec |
| Text processing | 221.5 pages/sec | 251.8 pages/sec |
| Background blur | 33.4 images/sec | 59.4 images/sec |
| Photo processing | 64.2 images/sec | 87.6 images/sec |
| Ray tracing | 12.5 Mpixels/sec | 22.5 Mpixels/sec |
PassMark
Passmark CPU (Single-Core)
Passmark CPU (Multi-Core)
| Integer math | 50.4 GOps/sec | 97.1 GOps/sec |
| Floating point math | 33.9 GOps/sec | 59 GOps/sec |
| Find prime numbers | 48M Primes/sec | 87M Primes/sec |
| Random string sorting | 17.2M Strings/sec | 40.4M Strings/sec |
| Data encryption | 9.6 GBytes/sec | 20.3 GBytes/sec |
| Data compression | 152.3 MBytes/sec | 340.4 MBytes/sec |
| Physics | 844 Frames/sec | 1362 Frames/sec |
| Extended instructions | 8.5B Matrices/sec | 25.4B Matrices/sec |
Blender
Blender CPU
Performance Per Watt
| Cinebench 2024 / Watt | 33.9 PPW | 16.9 PPW |
| Geekbench 6 Multi / Watt | 503.5 PPW | 223.8 PPW |
| Passmark CPU Mark / Watt | 923.3 PPW | 523.9 PPW |
| Blender / Watt | 6.32 PPW | 4.05 PPW |
These are rough calculations, as most CPUs surpass PL1 TDP wattage even in multicore workloads.
Recent User Tests
Intel Core i7 1355U
| Date | Benchmark | Result |
|---|---|---|
| π 2026-04-28 (Linode) | Geekbench 6 CPU | 2435 / 7355 |
AMD Ryzen 7 7840HS
| Date | Benchmark | Result |
|---|---|---|
| π 2025-12-08 (Hari) | Cinebench 2024 | 104 / 880 |
| π 2025-07-31 (Safi ullah) | Cinebench 2024 | 102 / 911 |
| π 2025-06-10 (Johns) | Cinebench 2024 | 105 / 929 |
| π 2025-04-05 (KaniastyGucio) | Cinebench 2024 | 100 / 910 |
| π 2024-12-09 (Anand) | Cinebench 2024 | 72 / 719 |
Specifications
Full technical specification of Intel Core i7 1355U and AMD Ryzen 7 7840HSGeneral
| Vendor | Intel | Amd |
| Released | January 3, 2023 | January 4, 2023 |
| Type | Laptop | Laptop |
| Instruction Set | x86-64 | x86-64 |
| Codename | Raptor Lake | Zen 4 (Phoenix) |
| Model number | i7-1355U | - |
| Integrated GPU | Iris Xe Graphics (96EU) | Radeon 780M |
| Rival Equivalent | - | - Intel Core i7 13620H |
| Successor | - Intel Core Ultra 7 255U | - AMD Ryzen 7 8840HS |
Intel CPU rating (#159th place)
AMD Ryzen CPU ranking (#61st place)
CPU
| P-Cores | 2 | 8 |
| P-Threads | 4 | 16 |
| Base Frequency (P) | 1.7 GHz | 3.8 GHz |
| Turbo Boost Frequency (P) | 5 GHz | 5.1 GHz |
| E-Cores | 8 | - |
| E-Threads | 8 | - |
| Base Frequency (E) | 1.2 GHz | - |
| Turbo Boost Frequency (E) | 3.7 GHz | - |
| Total Cores | 10 | 8 |
| Total Threads | 12 | 16 |
| Bus Frequency | 100 MHz | 100 MHz |
| Multiplier | 17x | 38x |
| L1 Cache | 80K (per core) | 64K (per core) |
| L2 Cache | 1280K (per core) | 1MB (per core) |
| L3 Cache | 12MB (shared) | 16MB (shared) |
| Unlocked Multiplier | No | No |
Package
| Transistors | - | 25 billions |
| Fabrication Process | 10 nm | 4 nm |
| TDP (PL1) | 12-15 W (configurable) | 35-54 W (configurable) |
| Max. Boost TDP (PL2) | 55 W | - |
| Socket | BGA-1744 | FP8 |
| Peak Temperature | 100Β°C | 100Β°C |
Laptop processors ranking (#91st place)
iGPU
| Integrated Graphics | Intel Iris Xe Graphics (96EU) | Radeon 780M |
| GPU Base Clock | 300 MHz | 800 MHz |
| GPU Boost Clock | 1300 MHz | 2700 MHz |
| Shading Units | 768 | 768 |
| TMUs | 48 | 48 |
| ROPs | 24 | 32 |
| Execution Units | 96 | 12 |
| TGP | 15 W | 15 W |
iGPU FLOPS
Memory Support
| Memory Types | - DDR5-5200 - DDR4-3200 - LPDDR5-6400 - LPDDR5x-6400 - LPDDR4x-4267 |
- DDR5-5600 - LPDDR5x-7500 |
| Max. Memory Size | 96 GB | 256 GB |
| Memory Channels | 2 | 2 |
| ECC Support | No | Yes |
Misc
| Official Site | Intel Core i7 1355U official page | AMD Ryzen 7 7840HS official page |
| PCI Express Version | 4.0 | 4.0 |
| PCI Express Lanes | 20 | 20 |
Further details
Notes on Ryzen 7 7840HS:
- DDR5 memory is supported only on the FP7r2 socket, while FP7 and FP8 sockets support LPDDR5/x.
- ECC support is available exclusively on the FP7r2 socket.
Cast your vote
Total votes: 21