Ryzen 7 5800U vs Core i9-9900KF
Ryzen 7 5800U
Core i9-9900KF
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
Performance Per Dollar Core i9-9900KF
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Ryzen 7 5800U | Core i9-9900KF |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ✅ More affordable ($0) | ⚠️ Higher cost ($350) |
| Longevity | ✨ Modern (Cezanne-U (Zen 3) (2021) / 7 nm) | ✨ Modern (Coffee Lake-R (2018−2019) / 14 nm) |
💎 Value Proposition
| Insight | Ryzen 7 5800U | Core i9-9900KF |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($0) | ⚠️ Higher cost ($350) |
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 5800U and Core i9-9900KF
Ryzen 7 5800U
The Ryzen 7 5800U is manufactured by AMD. It was released in 12 January 2021 (4 years ago). It is based on the Cezanne-U (Zen 3) (2021) architecture. It features 8 cores and 16 threads. Base frequency is 1.9 GHz, with boost up to 4.4 GHz. L3 cache: 16 MB (total). L2 cache: 512K (per core). Built on 7 nm process technology. Socket: FP6. Thermal design power (TDP): 15 Watt. Memory support: DDR4. Passmark benchmark score: 18,067 points. Launch price was $299.
Core i9-9900KF
The Core i9-9900KF is manufactured by Intel. It was released in 8 January 2019 (6 years ago). It is based on the Coffee Lake-R (2018−2019) architecture. It features 8 cores and 16 threads. Base frequency is 3.6 GHz, with boost up to 5 GHz. L3 cache: 16 MB (total). L2 cache: 256K (per core). Built on 14 nm process technology. Socket: LGA1151. Thermal design power (TDP): 95 Watt. Memory support: DDR4-2666. Passmark benchmark score: 18,029 points. Launch price was $488.
Processing Power
Both the Ryzen 7 5800U and Core i9-9900KF share an identical 8-core/16-thread configuration. Boost clocks reach 4.4 GHz on the Ryzen 7 5800U versus 5 GHz on the Core i9-9900KF — a 12.8% clock advantage for the Core i9-9900KF (base: 1.9 GHz vs 3.6 GHz). The Ryzen 7 5800U uses the Cezanne-U (Zen 3) (2021) architecture (7 nm), while the Core i9-9900KF uses Coffee Lake-R (2018−2019) (14 nm). In PassMark, the Ryzen 7 5800U scores 18,067 against the Core i9-9900KF's 18,029 — a 0.2% lead for the Ryzen 7 5800U. Both processors carry 16 MB (total) of L3 cache.
| Feature | Ryzen 7 5800U | Core i9-9900KF |
|---|---|---|
| Cores / Threads | 8 / 16 | 8 / 16 |
| Boost Clock | 4.4 GHz | 5 GHz+14% |
| Base Clock | 1.9 GHz | 3.6 GHz+89% |
| L3 Cache | 16 MB (total) | 16 MB (total) |
| L2 Cache | 512K (per core)+100% | 256K (per core) |
| Process | 7 nm-50% | 14 nm |
| Architecture | Cezanne-U (Zen 3) (2021) | Coffee Lake-R (2018−2019) |
| PassMark | 18,067 | 18,029 |
| Cinebench R23 Multi | — | 12,812 |
| Geekbench 6 Single | — | 1,720 |
| Geekbench 6 Multi | — | 8,150 |
Memory & Platform
The Ryzen 7 5800U uses the FP6 socket (PCIe 3.0), while the Core i9-9900KF uses LGA1151 (PCIe 3.0) — making them incompatible on the same motherboard.
| Feature | Ryzen 7 5800U | Core i9-9900KF |
|---|---|---|
| Socket | FP6 | LGA1151 |
| PCIe Generation | PCIe 3.0 | PCIe 3.0 |
| Max RAM Speed | — | DDR4-2666 |
| Max RAM Capacity | — | 128 GB |
| RAM Channels | — | 2 |
| ECC Support | — | ❌ |
| PCIe Lanes | — | 16 |
Advanced Features
Virtualization: not specified (Ryzen 7 5800U) / VT-x, VT-d (Core i9-9900KF). Primary use case: Core i9-9900KF targets Gaming.
| Feature | Ryzen 7 5800U | Core i9-9900KF |
|---|---|---|
| Integrated GPU | — | No |
| Unlocked | — | Yes |
| AVX-512 | — | No |
| Virtualization | — | VT-x, VT-d |
| Target Use | — | Gaming |
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The most powerful cpus ranked by PassMark CPU Mark benchmark scores.
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