Ryzen 7 7840S vs Core i9-7920X
Ryzen 7 7840S
Core i9-7920X
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 7840S
Performance Per Dollar Core i9-7920X
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Ryzen 7 7840S | Core i9-7920X |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ✅ More affordable ($0) | ⚠️ Higher cost ($236) |
| Longevity | ✨ Modern (Phoenix-HS (Zen 4) (2023) / 4 nm) | ✨ Modern (Skylake (server) (2017−2018) / 14 nm) |
💎 Value Proposition
| Insight | Ryzen 7 7840S | Core i9-7920X |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($0) | ⚠️ Higher cost ($236) |
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 7840S and Core i9-7920X
Ryzen 7 7840S
The Ryzen 7 7840S is manufactured by AMD. It was released in 5 January 2023 (2 years ago). It is based on the Phoenix-HS (Zen 4) (2023) 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. L2 cache: 8 MB. Built on 4 nm process technology. Socket: FP7/FP7r2/FP8. Thermal design power (TDP): 8 MB + 16 MB. Memory support: DDR5. Passmark benchmark score: 23,290 points. Launch price was $299.
Core i9-7920X
The Core i9-7920X is manufactured by Intel. It was released in 10 September 2017 (8 years ago). It is based on the Skylake (server) (2017−2018) architecture. It features 12 cores and 24 threads. Base frequency is 2.9 GHz, with boost up to 4.4 GHz. L3 cache: 16.5 MB (total). L2 cache: 1 MB (per core). Built on 14 nm process technology. Socket: LGA2066. Thermal design power (TDP): 140 Watt. Memory support: DDR4-2666. Passmark benchmark score: 23,508 points. Launch price was $1,199.
Processing Power
The Ryzen 7 7840S packs 8 cores / 16 threads, while the Core i9-7920X offers 12 cores / 24 threads — the Core i9-7920X has 4 more cores. Boost clocks reach 5.1 GHz on the Ryzen 7 7840S versus 4.4 GHz on the Core i9-7920X — a 14.7% clock advantage for the Ryzen 7 7840S (base: 3.8 GHz vs 2.9 GHz). The Ryzen 7 7840S uses the Phoenix-HS (Zen 4) (2023) architecture (4 nm), while the Core i9-7920X uses Skylake (server) (2017−2018) (14 nm). In PassMark, the Ryzen 7 7840S scores 23,290 against the Core i9-7920X's 23,508 — a 0.9% lead for the Core i9-7920X. L3 cache: 16 MB on the Ryzen 7 7840S vs 16.5 MB (total) on the Core i9-7920X.
| Feature | Ryzen 7 7840S | Core i9-7920X |
|---|---|---|
| Cores / Threads | 8 / 16 | 12 / 24+50% |
| Boost Clock | 5.1 GHz+16% | 4.4 GHz |
| Base Clock | 3.8 GHz+31% | 2.9 GHz |
| L3 Cache | 16 MB | 16.5 MB (total)+3% |
| L2 Cache | 8 MB+700% | 1 MB (per core) |
| Process | 4 nm-71% | 14 nm |
| Architecture | Phoenix-HS (Zen 4) (2023) | Skylake (server) (2017−2018) |
| PassMark | 23,290 | 23,508 |
| Cinebench R23 Multi | 13,500 | — |
| Geekbench 6 Single | 2,570 | — |
| Geekbench 6 Multi | 13,535 | — |
Memory & Platform
The Ryzen 7 7840S uses the FP7/FP7r2/FP8 socket (PCIe 4.0), while the Core i9-7920X uses LGA2066 (PCIe 3.0) — making them incompatible on the same motherboard.
| Feature | Ryzen 7 7840S | Core i9-7920X |
|---|---|---|
| Socket | FP7/FP7r2/FP8 | LGA2066 |
| PCIe Generation | PCIe 4.0+33% | PCIe 3.0 |
| Max RAM Speed | DDR5-5600, LPDDR5x-7500 | — |
| Max RAM Capacity | 256 GB | — |
| RAM Channels | 2 | — |
| ECC Support | ✅ | — |
| PCIe Lanes | 20 | — |
Advanced Features
Virtualization: AMD-V (SVM) (Ryzen 7 7840S) / not specified (Core i9-7920X). The Ryzen 7 7840S includes integrated graphics (Radeon 780M), while the Core i9-7920X requires a dedicated GPU. Primary use case: Ryzen 7 7840S targets Gaming. Direct competitor: Ryzen 7 7840S rivals Core i7-1360P.
| Feature | Ryzen 7 7840S | Core i9-7920X |
|---|---|---|
| Integrated GPU | Yes | — |
| IGPU Model | Radeon 780M | — |
| Unlocked | No | — |
| AVX-512 | Yes | — |
| Virtualization | AMD-V (SVM) | — |
| Target Use | Gaming | — |
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