Core i9-11900 vs Ryzen 5 8645HS
Core i9-11900
Ryzen 5 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 Core i9-11900
Performance Per Dollar Ryzen 5 8645HS
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Core i9-11900 | Ryzen 5 8645HS |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ⚠️ Higher cost ($220) | ✅ More affordable ($0) |
| Longevity | ✨ Modern (Rocket Lake (2021) / 14 nm) | ✨ Modern (Hawk Point-HS (Zen 4) (2023−2024) / 4 nm) |
💎 Value Proposition
| Insight | Core i9-11900 | Ryzen 5 8645HS |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ⚠️ Higher cost ($220) | ✅ More affordable ($0) |
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 Core i9-11900 and Ryzen 5 8645HS
Core i9-11900
The Core i9-11900 is manufactured by Intel. It was released in 16 March 2021 (4 years ago). It is based on the Rocket Lake (2021) architecture. It features 8 cores and 16 threads. Base frequency is 2.5 GHz, with boost up to 5.1 GHz. L3 cache: 16 MB (total). L2 cache: 256K (per core). Built on 14 nm process technology. Socket: LGA1200. Thermal design power (TDP): 65 Watt. Memory support: DDR4-3200. Passmark benchmark score: 22,422 points. Launch price was $299.
Ryzen 5 8645HS
The Ryzen 5 8645HS is manufactured by AMD. It was released in 6 December 2023 (1 year ago). It is based on the Hawk Point-HS (Zen 4) (2023−2024) 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: FP8. Thermal design power (TDP): 45 Watt. Memory support: DDR5. Passmark benchmark score: 22,257 points. Launch price was $299.
Processing Power
The Core i9-11900 packs 8 cores / 16 threads, while the Ryzen 5 8645HS offers 6 cores / 12 threads — the Core i9-11900 has 2 more cores. Boost clocks reach 5.1 GHz on the Core i9-11900 versus 5 GHz on the Ryzen 5 8645HS — a 2% clock advantage for the Core i9-11900 (base: 2.5 GHz vs 4.3 GHz). The Core i9-11900 uses the Rocket Lake (2021) architecture (14 nm), while the Ryzen 5 8645HS uses Hawk Point-HS (Zen 4) (2023−2024) (4 nm). In PassMark, the Core i9-11900 scores 22,422 against the Ryzen 5 8645HS's 22,257 — a 0.7% lead for the Core i9-11900. Both processors carry 16 MB (total) of L3 cache.
| Feature | Core i9-11900 | Ryzen 5 8645HS |
|---|---|---|
| Cores / Threads | 8 / 16+33% | 6 / 12 |
| Boost Clock | 5.1 GHz+2% | 5 GHz |
| Base Clock | 2.5 GHz | 4.3 GHz+72% |
| L3 Cache | 16 MB (total) | 16 MB (total) |
| L2 Cache | 256K (per core) | 1 MB (per core)+300% |
| Process | 14 nm | 4 nm-71% |
| Architecture | Rocket Lake (2021) | Hawk Point-HS (Zen 4) (2023−2024) |
| PassMark | 22,422 | 22,257 |
| Cinebench R23 Multi | — | 13,316 |
| Geekbench 6 Single | — | 2,574 |
| Geekbench 6 Multi | — | 10,675 |
Memory & Platform
The Core i9-11900 uses the LGA1200 socket (PCIe 3.0), while the Ryzen 5 8645HS uses FP8 (PCIe 4.0) — making them incompatible on the same motherboard.
| Feature | Core i9-11900 | Ryzen 5 8645HS |
|---|---|---|
| Socket | LGA1200 | FP8 |
| PCIe Generation | PCIe 3.0 | PCIe 4.0+33% |
| Max RAM Speed | — | LPDDR5x-7500 |
| Max RAM Capacity | — | 256 GB |
| RAM Channels | — | 2 |
| ECC Support | — | ✅ |
| PCIe Lanes | — | 20 |
Advanced Features
Virtualization: not specified (Core i9-11900) / AMD-V (SVM) (Ryzen 5 8645HS). The Ryzen 5 8645HS includes integrated graphics (Radeon 760M), while the Core i9-11900 requires a dedicated GPU. Primary use case: Ryzen 5 8645HS targets Gaming. Direct competitor: Ryzen 5 8645HS rivals Core i5-13500H.
| Feature | Core i9-11900 | Ryzen 5 8645HS |
|---|---|---|
| Integrated GPU | — | Yes |
| IGPU Model | — | Radeon 760M |
| 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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