AMD Ryzen 7 7840U vs Ryzen 5 7640U
We compared two laptop CPUs: the 3.3 GHz AMD Ryzen 7 7840U with 8-cores against the 3.5 GHz Ryzen 5 7640U 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 electricity consumption
NanoReview Final Score
Generic CPU rating
Key Differences
Advantages of AMD Ryzen 7 7840U
- Has 2 more physical cores
- 4% higher Turbo Boost frequency (5.1 GHz vs 4.9 GHz)
Benchmarks
Cinebench R23 (Single-Core)
Cinebench R23 (Multi-Core)
Geekbench 5 (Single-Core)
Geekbench 5 (Multi-Core)
Specifications
General
| Vendor | AMD | AMD |
| Released | May 3, 2023 | May 3, 2023 |
| Type | Laptop | Laptop |
| instruction set | x86-64 | x86-64 |
| Codename | Zen 4 (Phoenix) | Zen 4 (Phoenix) |
| Integrated GPU | Radeon 780M | Radeon 760M |
CPU
| P-Cores | 8 | 6 |
| P-Threads | 16 | 12 |
| Base Frequency (P) | 3.3 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 | 33x | 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 |
| Socket | FP8 | FP8 |
| TDP | 15-30 W (configurable) | 15-30 W (configurable) |
| Peak temperature | 100°C | 100°C |
iGPU
| Integrated Graphics | Radeon 780M | Radeon 760M |
| GPU Base Clock | 1500 MHz | 1500 MHz |
| GPU Boost Clock | 2700 MHz | 2600 MHz |
| Shading Units | 768 | 384 |
| TMUs | 48 | 24 |
| ROPs | 32 | 16 |
| Execution Units | 12 | 6 |
| TGP | 15 W | 15 W |
| Max. Resolution | 7680x4320 - 60 Hz | - |
iGPU FLOPS
Memory Support
| Memory types | DDR5-5600, LPDDR5x-7500 | DDR5-5600, LPDDR5x-7500 |
| Memory Size | 256 GB | 256 GB |
| Max. Memory Channels | 2 | 2 |
| ECC Support | Yes | Yes |
Misc
| Official site | AMD Ryzen 7 7840U official page | AMD Ryzen 5 7640U official page |
| PCI Express Version | 4.0 | 4.0 |
| PCI Express Lanes | 20 | 20 |
Cast your vote
Total votes: 12