Ryzen 5 PRO 8645HS vs Ryzen 7 8840U
Ryzen 5 PRO 8645HS
Ryzen 7 8840U
Performance Spectrum - CPU
About PassMark
PassMark CPU Mark evaluates processor speed through complex mathematical computations. It provides a reliable metric to compare multi-core performance, where higher scores indicate faster processing for multitasking, gaming, and heavy workloads.
Value Upgrade Path
This is the official ChipVERSUS Value Rating, comparing raw performance (PassMark) per dollar. Components placed above yours deliver better value for money.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Ryzen 5 PRO 8645HS
Performance Per Dollar
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Ryzen 5 PRO 8645HS | Ryzen 7 8840U |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | Equivalent pricing | Equivalent pricing |
| Longevity | ✨ Modern (Hawk Point (2024−2025) / 4 nm) | ✨ Modern (Hawk Point-U (Zen 4) (2023−2025) / 4 nm) |
💎 Value Proposition
| Insight | Ryzen 5 PRO 8645HS | Ryzen 7 8840U |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | Equivalent pricing | Equivalent pricing |
Performance Check
To accurately isolate CPU performance, all benchmarks below use an NVIDIA RTX 4090 as the reference GPU. This eliminates GPU-side bottlenecks and highlights pure processing throughput differences between the CPUs.
Note: Real-world results may vary based on your actual GPU. CPU performance impact is more visible in processing-intensive titles and high-refresh-rate gaming scenarios.
Technical Specifications
Side-by-side comparison of Ryzen 5 PRO 8645HS and Ryzen 7 8840U
Ryzen 5 PRO 8645HS
The Ryzen 5 PRO 8645HS is manufactured by AMD. It was released in 16 April 2024 (1 year ago). It is based on the Hawk Point (2024−2025) architecture. It features 6 cores and 12 threads. Base frequency is 4.3 GHz, with boost up to 5 GHz. L3 cache: 16 MB (total). L2 cache: 1 MB (per core). Built on 4 nm process technology. Socket: FP7. Thermal design power (TDP): 45 Watt. Memory support: DDR5. Passmark benchmark score: 23,227 points. Launch price was $299.
Ryzen 7 8840U
The Ryzen 7 8840U is manufactured by AMD. It was released in 6 December 2023 (1 year ago). It is based on the Hawk Point-U (Zen 4) (2023−2025) architecture. It features 8 cores and 16 threads. Base frequency is 3.3 GHz, with boost up to 5.1 GHz. L3 cache: 16 MB (total). L2 cache: 1 MB (per core). Built on 4 nm process technology. Socket: FP8. Thermal design power (TDP): 28 Watt. Memory support: DDR5. Passmark benchmark score: 23,415 points. Launch price was $299.
Processing Power
The Ryzen 5 PRO 8645HS packs 6 cores / 12 threads, while the Ryzen 7 8840U offers 8 cores / 16 threads — the Ryzen 7 8840U has 2 more cores. Boost clocks reach 5 GHz on the Ryzen 5 PRO 8645HS versus 5.1 GHz on the Ryzen 7 8840U — a 2% clock advantage for the Ryzen 7 8840U (base: 4.3 GHz vs 3.3 GHz). The Ryzen 5 PRO 8645HS uses the Hawk Point (2024−2025) architecture (4 nm), while the Ryzen 7 8840U uses Hawk Point-U (Zen 4) (2023−2025) (4 nm). In PassMark, the Ryzen 5 PRO 8645HS scores 23,227 against the Ryzen 7 8840U's 23,415 — a 0.8% lead for the Ryzen 7 8840U. Both processors carry 16 MB (total) of L3 cache.
| Feature | Ryzen 5 PRO 8645HS | Ryzen 7 8840U |
|---|---|---|
| Cores / Threads | 6 / 12 | 8 / 16+33% |
| Boost Clock | 5 GHz | 5.1 GHz+2% |
| Base Clock | 4.3 GHz+30% | 3.3 GHz |
| L3 Cache | 16 MB (total) | 16 MB (total) |
| L2 Cache | 1 MB (per core) | 1 MB (per core) |
| Process | 4 nm | 4 nm |
| Architecture | Hawk Point (2024−2025) | Hawk Point-U (Zen 4) (2023−2025) |
| PassMark | 23,227 | 23,415 |
Memory & Platform
The Ryzen 5 PRO 8645HS uses the FP7 socket (PCIe 4.0), while the Ryzen 7 8840U uses FP8 (PCIe 4.0) — making them incompatible on the same motherboard.
| Feature | Ryzen 5 PRO 8645HS | Ryzen 7 8840U |
|---|---|---|
| Socket | FP7 | FP8 |
| PCIe Generation | PCIe 4.0 | PCIe 4.0 |
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The most powerful cpus ranked by PassMark CPU Mark benchmark scores.
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