Ryzen 7 5800X vs Core i9-9900X
Ryzen 7 5800X
Core i9-9900X
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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 5800X
Performance Per Dollar Core i9-9900X
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Ryzen 7 5800X | Core i9-9900X |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ✅ More affordable ($180) | ⚠️ Higher cost ($300) |
| Longevity | ✨ Modern (Vermeer (Zen 3) (2020−2022) / 7 nm, 12 nm) | ✨ Modern (Skylake (server) (2017−2018) / 14 nm) |
💎 Value Proposition
| Insight | Ryzen 7 5800X | Core i9-9900X |
|---|---|---|
| Cost Efficiency | ✅ Better overall value (+113%) | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($180) | ⚠️ Higher cost ($300) |
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 5800X and Core i9-9900X
Ryzen 7 5800X
The Ryzen 7 5800X is manufactured by AMD. It was released in 5 November 2020 (5 years ago). It is based on the Vermeer (Zen 3) (2020−2022) architecture. It features 8 cores and 16 threads. Base frequency is 3.8 GHz, with boost up to 4.7 GHz. L3 cache: 32 MB. L2 cache: 512K (per core). Built on 7 nm, 12 nm process technology. Socket: AM4. Thermal design power (TDP): 105 Watt. Memory support: DDR4. Passmark benchmark score: 27,712 points. Launch price was $449.
Core i9-9900X
The Core i9-9900X is manufactured by Intel. It was released in 19 October 2018 (7 years ago). It is based on the Skylake (server) (2017−2018) architecture. It features 10 cores and 20 threads. Base frequency is 3.5 GHz, with boost up to 4.5 GHz. L3 cache: 19.25 MB (total). L2 cache: 1 MB (per core). Built on 14 nm process technology. Socket: LGA2066. Thermal design power (TDP): 165 Watt. Memory support: DDR4-2666. Passmark benchmark score: 21,655 points. Launch price was $989.
Processing Power
The Ryzen 7 5800X packs 8 cores / 16 threads, while the Core i9-9900X offers 10 cores / 20 threads — the Core i9-9900X has 2 more cores. Boost clocks reach 4.7 GHz on the Ryzen 7 5800X versus 4.5 GHz on the Core i9-9900X — a 4.3% clock advantage for the Ryzen 7 5800X (base: 3.8 GHz vs 3.5 GHz). The Ryzen 7 5800X uses the Vermeer (Zen 3) (2020−2022) architecture (7 nm, 12 nm), while the Core i9-9900X uses Skylake (server) (2017−2018) (14 nm). In PassMark, the Ryzen 7 5800X scores 27,712 against the Core i9-9900X's 21,655 — a 24.5% lead for the Ryzen 7 5800X. L3 cache: 32 MB on the Ryzen 7 5800X vs 19.25 MB (total) on the Core i9-9900X.
| Feature | Ryzen 7 5800X | Core i9-9900X |
|---|---|---|
| Cores / Threads | 8 / 16 | 10 / 20+25% |
| Boost Clock | 4.7 GHz+4% | 4.5 GHz |
| Base Clock | 3.8 GHz+9% | 3.5 GHz |
| L3 Cache | 32 MB+66% | 19.25 MB (total) |
| L2 Cache | 512K (per core) | 1 MB (per core)+100% |
| Process | 7 nm, 12 nm-50% | 14 nm |
| Architecture | Vermeer (Zen 3) (2020−2022) | Skylake (server) (2017−2018) |
| PassMark | 27,712+28% | 21,655 |
| Cinebench R23 Multi | — | 13,985 |
| Geekbench 6 Single | — | 1,459 |
| Geekbench 6 Multi | — | 9,475 |
Memory & Platform
The Ryzen 7 5800X uses the AM4 socket (PCIe 4.0), while the Core i9-9900X uses LGA2066 (PCIe 3.0) — making them incompatible on the same motherboard. Both support up to DDR4-3200 memory speed. Both support up to 128 GB of RAM. Memory channels: 2 (Ryzen 7 5800X) vs 4 (Core i9-9900X). PCIe lanes: 24 (Ryzen 7 5800X) vs 44 (Core i9-9900X) — the Core i9-9900X offers 20 more lanes for additional GPUs or NVMe drives. Chipset compatibility: AMD 500 series,AMD 400 series,AMD 300 series (Ryzen 7 5800X) and X299 (Core i9-9900X).
| Feature | Ryzen 7 5800X | Core i9-9900X |
|---|---|---|
| Socket | AM4 | LGA2066 |
| PCIe Generation | PCIe 4.0+33% | PCIe 3.0 |
| Max RAM Speed | DDR4-3200 | DDR4-2666 |
| Max RAM Capacity | 128 GB | 128 GB |
| RAM Channels | 2 | 4+100% |
| ECC Support | ✅ | ❌ |
| PCIe Lanes | 24 | 44+83% |
Advanced Features
Both processors feature an unlocked multiplier for overclocking. Only the Core i9-9900X supports AVX-512 instructions — important for machine learning and scientific applications. Virtualization support: AMD-V (Ryzen 7 5800X) vs VT-x, VT-d (Core i9-9900X). Primary use case: Ryzen 7 5800X targets Desktop.
| Feature | Ryzen 7 5800X | Core i9-9900X |
|---|---|---|
| Integrated GPU | No | No |
| Unlocked | Yes | Yes |
| AVX-512 | No | Yes |
| Virtualization | AMD-V | VT-x, VT-d |
| Target Use | Desktop | — |
Value Analysis
The Ryzen 7 5800X launched at $449 MSRP, while the Core i9-9900X debuted at $989. At current prices ($180 vs $300), the Ryzen 7 5800X is $120 cheaper. In terms of value (PassMark points per dollar), the Ryzen 7 5800X delivers 154.0 pts/$ vs 72.2 pts/$ for the Core i9-9900X — making the Ryzen 7 5800X the 72.3% better value option.
| Feature | Ryzen 7 5800X | Core i9-9900X |
|---|---|---|
| MSRP | $449-55% | $989 |
| Avg Price (30d) | $180-40% | $300 |
| Performance per Dollar | 154.0+113% | 72.2 |
| Release Date | 2020 | 2018 |
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