Core i9-10900K vs Ryzen 5 8645HS
Core i9-10900K
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 i9-10900K
Performance Per Dollar Ryzen 5 8645HS
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Core i9-10900K | Ryzen 5 8645HS |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ⚠️ Higher cost ($500) | ✅ More affordable ($0) |
| Longevity | ✨ Modern (Comet Lake (2020−2025) / 14 nm) | ✨ Modern (Hawk Point-HS (Zen 4) (2023−2024) / 4 nm) |
💎 Value Proposition
| Insight | Core i9-10900K | Ryzen 5 8645HS |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ⚠️ Higher cost ($500) | ✅ 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 i9-10900K and Ryzen 5 8645HS
Core i9-10900K
The Core i9-10900K is manufactured by Intel. It was released in 30 April 2020 (5 years ago). It is based on the Comet Lake (2020−2025) architecture. It features 10 cores and 20 threads. Base frequency is 3.7 GHz, with boost up to 5.2 GHz. L3 cache: 20 MB (total). L2 cache: 256 kB (per core). Built on 14 nm process technology. Socket: LGA1200. Thermal design power (TDP): 125 Watt. Memory support: DDR4. Passmark benchmark score: 22,382 points. Launch price was $488.
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 i9-10900K packs 10 cores / 20 threads, while the Ryzen 5 8645HS offers 6 cores / 12 threads — the Core i9-10900K has 4 more cores. Boost clocks reach 5.2 GHz on the Core i9-10900K versus 5 GHz on the Ryzen 5 8645HS — a 3.9% clock advantage for the Core i9-10900K (base: 3.7 GHz vs 4.3 GHz). The Core i9-10900K uses the Comet Lake (2020−2025) architecture (14 nm), while the Ryzen 5 8645HS uses Hawk Point-HS (Zen 4) (2023−2024) (4 nm). In PassMark, the Core i9-10900K scores 22,382 against the Ryzen 5 8645HS's 22,257 — a 0.6% lead for the Core i9-10900K. L3 cache: 20 MB (total) on the Core i9-10900K vs 16 MB (total) on the Ryzen 5 8645HS.
| Feature | Core i9-10900K | Ryzen 5 8645HS |
|---|---|---|
| Cores / Threads | 10 / 20+67% | 6 / 12 |
| Boost Clock | 5.2 GHz+4% | 5 GHz |
| Base Clock | 3.7 GHz | 4.3 GHz+16% |
| L3 Cache | 20 MB (total)+25% | 16 MB (total) |
| L2 Cache | 256 kB (per core) | 1 MB (per core)+300% |
| Process | 14 nm | 4 nm-71% |
| Architecture | Comet Lake (2020−2025) | Hawk Point-HS (Zen 4) (2023−2024) |
| PassMark | 22,382 | 22,257 |
| Cinebench R23 Multi | — | 13,316 |
| Geekbench 6 Single | — | 2,574 |
| Geekbench 6 Multi | — | 10,675 |
Memory & Platform
The Core i9-10900K uses the LGA1200 socket (PCIe 3.0), while the Ryzen 5 8645HS uses FP8 (PCIe 4.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR4-2933 on the Core i9-10900K versus LPDDR5x-7500 on the Ryzen 5 8645HS — the Ryzen 5 8645HS supports 22.2% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Ryzen 5 8645HS supports up to 256 GB of RAM compared to 128 GB — 66.7% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 16 (Core i9-10900K) vs 20 (Ryzen 5 8645HS) — the Ryzen 5 8645HS offers 4 more lanes for additional GPUs or NVMe drives. Chipset compatibility: Intel 400 series (Core i9-10900K) and SoC (Ryzen 5 8645HS).
| Feature | Core i9-10900K | Ryzen 5 8645HS |
|---|---|---|
| Socket | LGA1200 | FP8 |
| PCIe Generation | PCIe 3.0 | PCIe 4.0+33% |
| Max RAM Speed | DDR4-2933 | LPDDR5x-7500+25% |
| Max RAM Capacity | 128 GB | 256 GB+100% |
| RAM Channels | 2 | 2 |
| ECC Support | ❌ | ✅ |
| PCIe Lanes | 16 | 20+25% |
Advanced Features
Only the Core i9-10900K has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Only the Ryzen 5 8645HS supports AVX-512 instructions — important for machine learning and scientific applications. Virtualization support: VT-x, VT-d (Core i9-10900K) vs AMD-V (SVM) (Ryzen 5 8645HS). Both include integrated graphics — UHD Graphics 630 (Core i9-10900K) and Radeon 760M (Ryzen 5 8645HS) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Primary use case: Core i9-10900K targets Desktop, Ryzen 5 8645HS targets Gaming. Direct competitor: Ryzen 5 8645HS rivals Core i5-13500H.
| Feature | Core i9-10900K | Ryzen 5 8645HS |
|---|---|---|
| Integrated GPU | Yes | Yes |
| IGPU Model | UHD Graphics 630 | Radeon 760M |
| Unlocked | Yes | No |
| AVX-512 | No | Yes |
| Virtualization | VT-x, VT-d | AMD-V (SVM) |
| Target Use | Desktop | Gaming |
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