AMD Ryzen 7 7840HS vs Ryzen 5 8640HS
61
out of 100
VS
52
out of 100
We compared two laptop CPUs: the 3.8 GHz AMD Ryzen 7 7840HS with 8-cores against the 3.5 GHz Ryzen 5 8640HS with 6-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 AMD Ryzen 7 7840HS
- More powerful Radeon 780M integrated graphics: 4.1 vs 2.7 TFLOPS
- Has 2 more physical cores
- 21% faster in a single-core Geekbench v6 test - 2577 vs 2127 points
- 4% higher Turbo Boost frequency (5.1 GHz vs 4.9 GHz)
Advantages of AMD Ryzen 5 8640HS
- Newer - released 11 months later
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 | 1120 MB/sec | 928.4 MB/sec |
| Clang compilation | 102.5 Klines/sec | 53.5 Klines/sec |
| HTML 5 Browser | 217.2 pages/sec | 169.7 pages/sec |
| PDF Renderer | 350 Mpixels/sec | 200 Mpixels/sec |
| Text processing | 251.8 pages/sec | 237.7 pages/sec |
| Background blur | 59.4 images/sec | 37.6 images/sec |
| Photo processing | 87.6 images/sec | 72.3 images/sec |
| Ray tracing | 22.5 Mpixels/sec | 11.2 Mpixels/sec |
PassMark
Passmark CPU (Single-Core)
Passmark CPU (Multi-Core)
| Integer math | 97.1 GOps/sec | 67.1 GOps/sec |
| Floating point math | 59 GOps/sec | 39.2 GOps/sec |
| Find prime numbers | 87M Primes/sec | 71M Primes/sec |
| Random string sorting | 40.4M Strings/sec | 27.2M Strings/sec |
| Data encryption | 20.3 GBytes/sec | 13.5 GBytes/sec |
| Data compression | 340.4 MBytes/sec | 225.6 MBytes/sec |
| Physics | 1362 Frames/sec | 1002 Frames/sec |
| Extended instructions | 25.4B Matrices/sec | 15.9B Matrices/sec |
Blender
Blender CPU
Performance Per Watt
| Cinebench 2024 / Watt | 16.9 PPW | 19.9 PPW |
| Geekbench 6 Multi / Watt | 223.8 PPW | 262.2 PPW |
| Passmark CPU Mark / Watt | 523.9 PPW | 661.4 PPW |
| Blender / Watt | 4.05 PPW | - |
These are rough calculations, as most CPUs surpass PL1 TDP wattage even in multicore workloads.
Recent User Tests
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 |
AMD Ryzen 5 8640HS
No benchmark results yet
Specifications
Full technical specification of AMD Ryzen 7 7840HS and Ryzen 5 8640HSGeneral
| Vendor | Amd | Amd |
| Released | January 4, 2023 | December 6, 2023 |
| Type | Laptop | Laptop |
| Instruction Set | x86-64 | x86-64 |
| Codename | Zen 4 (Phoenix) | Zen 4 (Hawk Point) |
| Integrated GPU | Radeon 780M | Radeon 760M |
| Rival Equivalent | - Intel Core i7 13620H | - |
| Successor | - AMD Ryzen 7 8840HS | - |
AMD Ryzen CPU ranking (62nd and 100th place)
CPU
| P-Cores | 8 | 6 |
| P-Threads | 16 | 12 |
| Base Frequency (P) | 3.8 GHz | 3.5 GHz |
| Turbo Boost Frequency (P) | 5.1 GHz | 4.9 GHz |
| Total Cores | 8 | 6 |
| Total Threads | 16 | 12 |
| Bus Frequency | 100 MHz | 100 MHz |
| Multiplier | 38x | 35x |
| L1 Cache | 64K (per core) | 64K (per core) |
| L2 Cache | 1MB (per core) | 1MB (per core) |
| L3 Cache | 16MB (shared) | 16MB (shared) |
| Unlocked Multiplier | No | No |
Package
| Transistors | 25 billions | 25 billions |
| Fabrication Process | 4 nm | 4 nm |
| TDP (PL1) | 35-54 W (configurable) | 20-30 W (configurable) |
| Socket | FP8 | FP8 |
| Peak Temperature | 100Β°C | 100Β°C |
Laptop processors ranking (93rd and 181st place)
iGPU
| Integrated Graphics | Radeon 780M | Radeon 760M |
| GPU Base Clock | 800 MHz | 800 MHz |
| GPU Boost Clock | 2700 MHz | 2600 MHz |
| Shading Units | 768 | 512 |
| TMUs | 48 | 32 |
| ROPs | 32 | 16 |
| Execution Units | 12 | 8 |
| TGP | 15 W | 15 W |
iGPU FLOPS
More info: Radeon 760M compared to Radeon 780M
Memory Support
| Memory Types | - DDR5-5600 - LPDDR5x-7500 |
- DDR5-5600 - LPDDR5x-7500 |
| Max. Memory Size | 256 GB | 256 GB |
| Memory Channels | 2 | 2 |
| ECC Support | Yes | No |
Misc
| Official Site | AMD Ryzen 7 7840HS official page | AMD Ryzen 5 8640HS 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: 17