AMD Ryzen 5 8640U vs Ryzen 5 4500U
56
out of 100
VS
36
out of 100
We compared two 6-core laptop CPUs: the 3.5 GHz AMD Ryzen 5 8640U against the 2.3 GHz Ryzen 5 4500U. 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 5 8640U
- Supports up to 256 GB DDR5-5600 RAM
- Newer - released 4 years later
- More powerful Radeon 760M integrated graphics: 2.7 vs 1.2 TFLOPS
- Has 8 MB larger L3 cache size, helping fully utilize a high-end GPU in gaming
- More modern manufacturing process – 4 versus 7 nanometers
- 69% faster in a single-core Geekbench v6 test - 2519 vs 1491 points
- Newer PCI Express version – 4.0
- 23% higher Turbo Boost frequency (4.9 GHz vs 4 GHz)
Test in Benchmarks
Comparing the performance of CPUs across various tasksCinebench
Cinebench 2024 (Single)
Cinebench 2024 (Multi)
GeekBench v6
Geekbench 6 (Single-Core)
Geekbench 6 (Multi-Core)
| File compression | 1080 MB/sec | 513.8 MB/sec |
| Clang compilation | 71 Klines/sec | 29.7 Klines/sec |
| HTML 5 Browser | 226.5 pages/sec | 94.1 pages/sec |
| PDF Renderer | 260.8 Mpixels/sec | 138.8 Mpixels/sec |
| Text processing | 259.8 pages/sec | 129.8 pages/sec |
| Background blur | 48.1 images/sec | 26.6 images/sec |
| Photo processing | 94.5 images/sec | 45 images/sec |
| Ray tracing | 15.5 Mpixels/sec | 6.49 Mpixels/sec |
PassMark
Passmark CPU (Single-Core)
Passmark CPU (Multi-Core)
| Integer math | 66.4 GOps/sec | 30.7 GOps/sec |
| Floating point math | 39.6 GOps/sec | 21.5 GOps/sec |
| Find prime numbers | 68M Primes/sec | 36M Primes/sec |
| Random string sorting | 27.7M Strings/sec | 14.4M Strings/sec |
| Data encryption | 13.7 GBytes/sec | 6.6 GBytes/sec |
| Data compression | 226.7 MBytes/sec | 122.5 MBytes/sec |
| Physics | 1015 Frames/sec | 520 Frames/sec |
| Extended instructions | 16.4B Matrices/sec | 10.7B Matrices/sec |
Blender
Blender CPU
Performance Per Watt
| Cinebench 2024 / Watt | 20.4 PPW | 12.8 PPW |
| Geekbench 6 Multi / Watt | 343.6 PPW | 188.7 PPW |
| Passmark CPU Mark / Watt | 666.3 PPW | 425.5 PPW |
| Blender / Watt | - | 2.72 PPW |
These are rough calculations, as most CPUs surpass PL1 TDP wattage even in multicore workloads.
Specifications
Full technical specification of AMD Ryzen 5 8640U and Ryzen 5 4500UGeneral
| Vendor | Amd | Amd |
| Released | December 6, 2023 | January 6, 2020 |
| Type | Laptop | Laptop |
| Instruction Set | x86-64 | x86-64 |
| Codename | Zen 4 (Hawk Point) | Zen 2 (Renoir) |
| Integrated GPU | Radeon 760M | Radeon RX Vega 6 |
| Rival Equivalent | - Intel Core Ultra 7 155U | - Intel Core i5 1035G7 |
| Successor | - | - AMD Ryzen 5 8640U |
AMD Ryzen CPU ranking (86th and 170th place)
CPU
| P-Cores | 6 | 6 |
| P-Threads | 12 | 6 |
| Base Frequency (P) | 3.5 GHz | 2.3 GHz |
| Turbo Boost Frequency (P) | 4.9 GHz | 4 GHz |
| Total Cores | 6 | 6 |
| Total Threads | 12 | 6 |
| Bus Frequency | 100 MHz | 100 MHz |
| Multiplier | 35x | 23x |
| L1 Cache | 64K (per core) | 32K (per core) |
| L2 Cache | 1MB (per core) | 512K (per core) |
| L3 Cache | 16MB (shared) | 8MB (shared) |
| Unlocked Multiplier | No | No |
Package
| Transistors | 25 billions | - |
| Fabrication Process | 4 nm | 7 nm |
| TDP (PL1) | 15-30 W (configurable) | 10-25 W (configurable) |
| Socket | FP8 | FP6 |
| Peak Temperature | 100°C | 105°C |
Laptop processors ranking (#143rd place)
iGPU
| Integrated Graphics | Radeon 760M | Radeon RX Vega 6 |
| GPU Base Clock | 800 MHz | 300 MHz |
| GPU Boost Clock | 2600 MHz | 1500 MHz |
| Shading Units | 512 | 384 |
| TMUs | 32 | 24 |
| ROPs | 16 | 8 |
| Execution Units | 8 | 6 |
| TGP | 15 W | 15 W |
iGPU FLOPS
More info: Radeon RX Vega 6 compared to Radeon 760M
Memory Support
| Memory Types | - DDR5-5600 - LPDDR5x-7500 |
- DDR4-3200 - LPDDR4-4266 |
| Max. Memory Size | 256 GB | 64 GB |
| Memory Channels | 2 | 2 |
| Max. Memory Bandwidth | - | 68.27 GB/s |
| ECC Support | No | Yes |
Misc
| Official Site | AMD Ryzen 5 8640U official page | AMD Ryzen 5 4500U official page |
| PCI Express Version | 4.0 | 3.0 |
| PCI Express Lanes | 20 | 16 |
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