Ryzen 7 7840H vs Core i9-9940X
Ryzen 7 7840H
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
Performance Per Dollar Core i9-9940X
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Ryzen 7 7840H | Core i9-9940X |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ✅ More affordable ($0) | ⚠️ Higher cost ($850) |
| Longevity | ✨ Modern (Phoenix (2023−2024) / 4 nm) | ✨ Modern (Skylake (server) (2017−2018) / 14 nm) |
💎 Value Proposition
| Insight | Ryzen 7 7840H | Core i9-9940X |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($0) | ⚠️ 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 7840H and Core i9-9940X
Ryzen 7 7840H
The Ryzen 7 7840H is manufactured by AMD. It was released in Janeiro 2023 (2 years ago). It is based on the Phoenix (2023−2024) architecture. It features 8 cores and 16 threads. Base frequency is 3.8 GHz, with boost up to 5.1 GHz. L3 cache: 16 MB (total). L2 cache: 1 MB (per core). Built on 4 nm process technology. Socket: FP8. Thermal design power (TDP): 35 Watt. Memory support: DDR5-5600. Passmark benchmark score: 27,832 points. Launch price was $299.
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 7840H 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 5.1 GHz on the Ryzen 7 7840H versus 4.5 GHz on the Core i9-9940X — a 12.5% clock advantage for the Ryzen 7 7840H (base: 3.8 GHz vs 3.3 GHz). The Ryzen 7 7840H uses the Phoenix (2023−2024) architecture (4 nm), while the Core i9-9940X uses Skylake (server) (2017−2018) (14 nm). In PassMark, the Ryzen 7 7840H scores 27,832 against the Core i9-9940X's 28,088 — a 0.9% lead for the Core i9-9940X. L3 cache: 16 MB (total) on the Ryzen 7 7840H vs 19.25 MB (total) on the Core i9-9940X.
| Feature | Ryzen 7 7840H | Core i9-9940X |
|---|---|---|
| Cores / Threads | 8 / 16 | 14 / 28+75% |
| Boost Clock | 5.1 GHz+13% | 4.5 GHz |
| Base Clock | 3.8 GHz+15% | 3.3 GHz |
| L3 Cache | 16 MB (total) | 19.25 MB (total)+20% |
| L2 Cache | 1 MB (per core) | 1 MB (per core) |
| Process | 4 nm-71% | 14 nm |
| Architecture | Phoenix (2023−2024) | Skylake (server) (2017−2018) |
| PassMark | 27,832 | 28,088 |
Memory & Platform
The Ryzen 7 7840H uses the FP8 socket (PCIe 4.0), while the Core i9-9940X uses LGA2066 (PCIe 3.0) — making them incompatible on the same motherboard.
| Feature | Ryzen 7 7840H | Core i9-9940X |
|---|---|---|
| Socket | FP8 | LGA2066 |
| PCIe Generation | PCIe 4.0+33% | PCIe 3.0 |
| Max RAM Speed | — | DDR4-2666 |
| Max RAM Capacity | — | 128 GB |
| RAM Channels | — | 4 |
| ECC Support | — | ❌ |
| PCIe Lanes | — | 44 |
Advanced Features
Virtualization: not specified (Ryzen 7 7840H) / VT-x, VT-d (Core i9-9940X). Primary use case: Core i9-9940X targets Workstation.
| Feature | Ryzen 7 7840H | Core i9-9940X |
|---|---|---|
| Integrated GPU | — | No |
| Unlocked | — | Yes |
| AVX-512 | — | Yes |
| Virtualization | — | VT-x, VT-d |
| Target Use | — | Workstation |
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