Ryzen 7 5800X3D vs Core i9-9940X
Ryzen 7 5800X3D
Core i9-9940X
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 5800X3D
Performance Per Dollar Core i9-9940X
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Ryzen 7 5800X3D | Core i9-9940X |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ✅ More affordable ($429) | ⚠️ Higher cost ($850) |
| Longevity | ✨ Modern (Vermeer (Zen3) (2020−2022) / 7 nm, 12 nm) | ✨ Modern (Skylake (server) (2017−2018) / 14 nm) |
💎 Value Proposition
| Insight | Ryzen 7 5800X3D | Core i9-9940X |
|---|---|---|
| Cost Efficiency | ✅ Better overall value (+100%) | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($429) | ⚠️ Higher cost ($850) |
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 5800X3D and Core i9-9940X
Ryzen 7 5800X3D
The Ryzen 7 5800X3D is manufactured by AMD. It was released in 20 April 2022 (3 years ago). It is based on the Vermeer (Zen3) (2020−2022) architecture. It features 8 cores and 16 threads. Base frequency is 3.4 GHz, with boost up to 4.5 GHz. L3 cache: 96 MB (total). L2 cache: 512 kB (per core). Built on 7 nm, 12 nm process technology. Socket: AM4. Thermal design power (TDP): 105 Watt. Memory support: DDR4-3200. Passmark benchmark score: 28,298 points. Launch price was $449.
Core i9-9940X
The Core i9-9940X 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 14 cores and 28 threads. Base frequency is 3.3 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: 28,088 points. Launch price was $1,387.
Processing Power
The Ryzen 7 5800X3D packs 8 cores / 16 threads, while the Core i9-9940X offers 14 cores / 28 threads — the Core i9-9940X has 6 more cores. Boost clocks reach 4.5 GHz on the Ryzen 7 5800X3D versus 4.5 GHz on the Core i9-9940X — identical boost frequencies (base: 3.4 GHz vs 3.3 GHz). The Ryzen 7 5800X3D uses the Vermeer (Zen3) (2020−2022) architecture (7 nm, 12 nm), while the Core i9-9940X uses Skylake (server) (2017−2018) (14 nm). In PassMark, the Ryzen 7 5800X3D scores 28,298 against the Core i9-9940X's 28,088 — a 0.7% lead for the Ryzen 7 5800X3D. L3 cache: 96 MB (total) on the Ryzen 7 5800X3D vs 19.25 MB (total) on the Core i9-9940X.
| Feature | Ryzen 7 5800X3D | Core i9-9940X |
|---|---|---|
| Cores / Threads | 8 / 16 | 14 / 28+75% |
| Boost Clock | 4.5 GHz | 4.5 GHz |
| Base Clock | 3.4 GHz+3% | 3.3 GHz |
| L3 Cache | 96 MB (total)+399% | 19.25 MB (total) |
| L2 Cache | 512 kB (per core) | 1 MB (per core)+100% |
| Process | 7 nm, 12 nm-50% | 14 nm |
| Architecture | Vermeer (Zen3) (2020−2022) | Skylake (server) (2017−2018) |
| PassMark | 28,298 | 28,088 |
Memory & Platform
The Ryzen 7 5800X3D uses the AM4 socket (PCIe 4.0), while the Core i9-9940X 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 5800X3D) vs 4 (Core i9-9940X). PCIe lanes: 24 (Ryzen 7 5800X3D) vs 44 (Core i9-9940X) — the Core i9-9940X offers 20 more lanes for additional GPUs or NVMe drives.
| Feature | Ryzen 7 5800X3D | Core i9-9940X |
|---|---|---|
| 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
Virtualization: not specified (Ryzen 7 5800X3D) / VT-x, VT-d (Core i9-9940X). Primary use case: Core i9-9940X targets Workstation.
| Feature | Ryzen 7 5800X3D | Core i9-9940X |
|---|---|---|
| Integrated GPU | No | No |
| Unlocked | — | Yes |
| AVX-512 | — | Yes |
| Virtualization | — | VT-x, VT-d |
| Target Use | — | Workstation |
Value Analysis
The Ryzen 7 5800X3D launched at $449 MSRP, while the Core i9-9940X debuted at $1387. At current prices ($429 vs $850), the Ryzen 7 5800X3D is $421 cheaper. In terms of value (PassMark points per dollar), the Ryzen 7 5800X3D delivers 66.0 pts/$ vs 33.0 pts/$ for the Core i9-9940X — making the Ryzen 7 5800X3D the 66.5% better value option.
| Feature | Ryzen 7 5800X3D | Core i9-9940X |
|---|---|---|
| MSRP | $449-68% | $1387 |
| Avg Price (30d) | $429-50% | $850 |
| Performance per Dollar | 66.0+100% | 33.0 |
| Release Date | 2022 | 2018 |
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