Ryzen 7 7840S vs Ryzen 5 PRO 8645HS
Ryzen 7 7840S
Ryzen 5 PRO 8645HS
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 7 7840S
Performance Per Dollar Ryzen 5 PRO 8645HS
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Ryzen 7 7840S | Ryzen 5 PRO 8645HS |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | Equivalent pricing | Equivalent pricing |
| Longevity | ✨ Modern (Phoenix-HS (Zen 4) (2023) / 4 nm) | ✨ Modern (Hawk Point (2024−2025) / 4 nm) |
💎 Value Proposition
| Insight | Ryzen 7 7840S | Ryzen 5 PRO 8645HS |
|---|---|---|
| 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 7 7840S and Ryzen 5 PRO 8645HS
Ryzen 7 7840S
The Ryzen 7 7840S is manufactured by AMD. It was released in 5 January 2023 (2 years ago). It is based on the Phoenix-HS (Zen 4) (2023) architecture. It features 8 cores and 16 threads. Base frequency is 3.8 GHz, with boost up to 5.1 GHz. L3 cache: 16 MB. L2 cache: 8 MB. Built on 4 nm process technology. Socket: FP7/FP7r2/FP8. Thermal design power (TDP): 8 MB + 16 MB. Memory support: DDR5. Passmark benchmark score: 23,290 points. Launch price was $299.
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.
Processing Power
The Ryzen 7 7840S packs 8 cores / 16 threads, while the Ryzen 5 PRO 8645HS offers 6 cores / 12 threads — the Ryzen 7 7840S has 2 more cores. Boost clocks reach 5.1 GHz on the Ryzen 7 7840S versus 5 GHz on the Ryzen 5 PRO 8645HS — a 2% clock advantage for the Ryzen 7 7840S (base: 3.8 GHz vs 4.3 GHz). The Ryzen 7 7840S uses the Phoenix-HS (Zen 4) (2023) architecture (4 nm), while the Ryzen 5 PRO 8645HS uses Hawk Point (2024−2025) (4 nm). In PassMark, the Ryzen 7 7840S scores 23,290 against the Ryzen 5 PRO 8645HS's 23,227 — a 0.3% lead for the Ryzen 7 7840S. L3 cache: 16 MB on the Ryzen 7 7840S vs 16 MB (total) on the Ryzen 5 PRO 8645HS.
| Feature | Ryzen 7 7840S | Ryzen 5 PRO 8645HS |
|---|---|---|
| Cores / Threads | 8 / 16+33% | 6 / 12 |
| Boost Clock | 5.1 GHz+2% | 5 GHz |
| Base Clock | 3.8 GHz | 4.3 GHz+13% |
| L3 Cache | 16 MB | 16 MB (total) |
| L2 Cache | 8 MB+700% | 1 MB (per core) |
| Process | 4 nm | 4 nm |
| Architecture | Phoenix-HS (Zen 4) (2023) | Hawk Point (2024−2025) |
| PassMark | 23,290 | 23,227 |
| Cinebench R23 Multi | 13,500 | — |
| Geekbench 6 Single | 2,570 | — |
| Geekbench 6 Multi | 13,535 | — |
Memory & Platform
The Ryzen 7 7840S uses the FP7/FP7r2/FP8 socket (PCIe 4.0), while the Ryzen 5 PRO 8645HS uses FP7 (PCIe 4.0) — making them incompatible on the same motherboard.
| Feature | Ryzen 7 7840S | Ryzen 5 PRO 8645HS |
|---|---|---|
| Socket | FP7/FP7r2/FP8 | FP7 |
| PCIe Generation | PCIe 4.0 | PCIe 4.0 |
| Max RAM Speed | DDR5-5600, LPDDR5x-7500 | — |
| Max RAM Capacity | 256 GB | — |
| RAM Channels | 2 | — |
| ECC Support | ✅ | — |
| PCIe Lanes | 20 | — |
Advanced Features
Virtualization: AMD-V (SVM) (Ryzen 7 7840S) / not specified (Ryzen 5 PRO 8645HS). The Ryzen 7 7840S includes integrated graphics (Radeon 780M), while the Ryzen 5 PRO 8645HS requires a dedicated GPU. Primary use case: Ryzen 7 7840S targets Gaming. Direct competitor: Ryzen 7 7840S rivals Core i7-1360P.
| Feature | Ryzen 7 7840S | Ryzen 5 PRO 8645HS |
|---|---|---|
| Integrated GPU | Yes | — |
| IGPU Model | Radeon 780M | — |
| Unlocked | No | — |
| AVX-512 | Yes | — |
| Virtualization | AMD-V (SVM) | — |
| Target Use | Gaming | — |
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The most powerful cpus ranked by PassMark CPU Mark benchmark scores.
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