AMD Ryzen 5 8645HS VS AMD Ryzen 7 8840U
We are comparing the AMD Ryzen 5 8645HS (AMD) with the AMD Ryzen 7 8840U (AMD). Scroll down to the pros and cons of each processor, in-depth specs, and benchmark comparisons.
Overall Comparison
KEY DIFFERENCES OF AMD Ryzen 5 8645HS AND AMD Ryzen 7 8840U
Here’s how AMD Ryzen 5 8645HS and AMD Ryzen 7 8840U stack up against each other in their most impactful areas.
Reasons to consider the AMD Ryzen 5 8645HS
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30% higher P-core base frequency (4300 MHz vs 3300 MHz)
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12% higher Geekbench V6 single-core score (2668 vs 2382)
Reasons to consider the AMD Ryzen 7 8840U
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33% more CPU threads (16 vs 12)
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33% more CPU cores (8 vs 6)
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2% higher P-core turbo frequency (5100 MHz vs 5000 MHz)
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33% more performance-core threads (16 vs 12)
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33% more performance cores (8 vs 6)
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6% higher PassMark multi-core score (23354 vs 22121)
SPECIFICATION TABLE COMPARISON OF AMD Ryzen 5 8645HS AND AMD Ryzen 7 8840U
Below is the detailed specification table comparing AMD Ryzen 5 8645HS and AMD Ryzen 7 8840U.
Note: Highlighted specs mean that CPU wins that spec row.
If neither side is highlighted, it is a tie or there is not enough data for both specs.
| Specification | AMD Ryzen 5 8645HS | AMD Ryzen 7 8840U |
|---|---|---|
|
General Information
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| CPU Name: | AMD Ryzen 5 8645HS | AMD Ryzen 7 8840U |
| Vendor: | AMD | AMD |
| Release Date: | December 6, 2023 | December 6, 2023 |
| Type: | Laptop | Laptop |
| Instruction Set: | x86-64 | x86-64 |
| Codename: | Zen 4 (Hawk Point) | Zen 4 (Hawk Point) |
|
Package and Thermals
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| Manufacturing Process: | 4 nm | 4 nm |
| Transistor Count: | 25 billion | 25 billion |
| TDP (PL1): | 35-54 W | 15-30 W |
| Socket: | FP8 | FP8 |
| Max Temp (TJMax): | 100 C | 100 C |
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CPU Cores
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Total Cores
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| Total Cores | 6 | 8 |
| Total Threads | 12 | 16 |
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P-Cores
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| P-Cores | 6 | 8 |
| P-Threads | 12 | 16 |
| P-Core Base Frequency | 4300 MHz | 3300 MHz |
| P-Core Turbo Frequency | 5000 MHz | 5100 MHz |
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NPU
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| NPU |
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Cache and Bus
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| Multiplier | Locked | Locked |
| Bus Frequency | 100 MHz | 100 MHz |
| L1 Cache | 64 KB | 64 KB |
| L2 Cache | 1 MB | 1 MB |
| L3 Cache | 16 MB | 16 MB |
|
Memory Support
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| Memory Types: | DDR5-5600, LPDDR5x-7500 | DDR5-5600, LPDDR5x-7500 |
| Max Memory Size: | 256 GB | 256 GB |
| Memory Channels: | 2 | 2 |
| ECC Support: |
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| Technologies: | AVX-512, BMI1, BMI2, F16C, SHA, XDNA2, Precision Boost 2, SMT, AMD-V, EVP, NX-Bit, SMAP, SMEP | AVX-512, BMI1, BMI2, F16C, SHA, XDNA2, Precision Boost 2, SMT, AMD-V, EVP, NX-Bit, SMAP, SMEP |
|
Benchmarks
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Geekbench V6
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| Multi-Core | 11216 | 11459 |
| Single-Core | 2668 | 2382 |
| File Compression | 1150 | 984 |
| Clang Compression | 85 | 88 |
| HTML5 Browser | 211 | 235 |
| PDF Renderer | 283 | 346 |
| Text Processing | 283 | 248 |
| Background Blur | 59 | 48 |
| Photo Processing | 83 | 103 |
| Ray Tracing | 18 | 20 |
|
PassMark CPU
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| Multi-Core | 22121 | 23354 |
| Single-Core | 3572 | 3541 |
| Integer Math | 71100 | 85600 |
| Floating Point | 43900 | 48800 |
| Prime Numbers | 74 | 78 |
| String Sorting | 31300 | 32200 |
| Data Encryption | 15300 | 16200 |
| Data Compression | 259300 | 266800 |
| Physics | 1083 | 1178 |
| Extended Instructions | 19600 | 18700 |
|
Cinebench 2024
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| Multi-Core | 727 | 725 |
| Single-Core | 103 | 98 |
|
Blender
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| Render Score | 148 | 155 |
Tip: ▲ indicates a higher-is-better spec advantage, while ▼ indicates a lower-is-better advantage.
PERFORMANCE CHART COMPARISON OF AMD Ryzen 5 8645HS AND AMD Ryzen 7 8840U
The charts below visualize how AMD Ryzen 5 8645HS and AMD Ryzen 7 8840U stack up in key performance metrics.
Performance Radar Chart
Performance Benchmarks
Release Timeline of AMD Ryzen 5 8645HS and AMD Ryzen 7 8840U
AMD Ryzen 5 8645HS and AMD Ryzen 7 8840U were released on the same day.
Value For Money Calculator
Prices use available launch or current data. Enter your own prices to see which CPU gives better value.
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Domain Score Summary
Scores are generated by Comparigon's scoring algorithm and are intended as a high-level guide. They may not map 1-to-1 with the individual spec-by-spec comparisons shown in the table.
Our Verdict
In conclusion, the AMD Ryzen 5 8645HS has a narrow overall lead compared to the AMD Ryzen 7 8840U. Its strongest advantages are in Single-Core Performance and CPU Architecture. They are still fairly close in Multi-Core Performance, Memory Architecture and Energy Efficiency.
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