Ryzen 5 8400F vs Core i9-11900KF
Ryzen 5 8400F
Core i9-11900KF
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 5 8400F
Performance Per Dollar Core i9-11900KF
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Ryzen 5 8400F | Core i9-11900KF |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ✅ More affordable ($55) | ⚠️ Higher cost ($349) |
| Longevity | ✨ Modern (Phoenix (2023−2024) / 4 nm) | ✨ Modern (Rocket Lake (2021) / 14 nm) |
💎 Value Proposition
| Insight | Ryzen 5 8400F | Core i9-11900KF |
|---|---|---|
| Cost Efficiency | ✅ Better overall value (+534%) | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($55) | ⚠️ Higher cost ($349) |
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 5 8400F and Core i9-11900KF
Ryzen 5 8400F
The Ryzen 5 8400F is manufactured by AMD. It was released in 1 April 2024 (1 year ago). It is based on the Phoenix (2023−2024) architecture. It features 6 cores and 12 threads. Base frequency is 4.2 GHz, with boost up to 4.7 GHz. L3 cache: 16 MB (total). L2 cache: 1 MB (per core). Built on 4 nm process technology. Socket: AM5. Thermal design power (TDP): 65 Watt. Memory support: DDR5. Passmark benchmark score: 24,554 points. Launch price was $170.
Core i9-11900KF
The Core i9-11900KF is manufactured by Intel. It was released in 16 March 2021 (4 years ago). It is based on the Rocket Lake (2021) architecture. It features 8 cores and 16 threads. Base frequency is 3.5 GHz, with boost up to 5.2 GHz. L3 cache: 16 MB (total). L2 cache: 256K (per core). Built on 14 nm process technology. Socket: LGA1200. Thermal design power (TDP): 125 Watt. Memory support: DDR4-3200. Passmark benchmark score: 24,585 points. Launch price was $299.
Processing Power
The Ryzen 5 8400F packs 6 cores / 12 threads, while the Core i9-11900KF offers 8 cores / 16 threads — the Core i9-11900KF has 2 more cores. Boost clocks reach 4.7 GHz on the Ryzen 5 8400F versus 5.2 GHz on the Core i9-11900KF — a 10.1% clock advantage for the Core i9-11900KF (base: 4.2 GHz vs 3.5 GHz). The Ryzen 5 8400F uses the Phoenix (2023−2024) architecture (4 nm), while the Core i9-11900KF uses Rocket Lake (2021) (14 nm). In PassMark, the Ryzen 5 8400F scores 24,554 against the Core i9-11900KF's 24,585 — a 0.1% lead for the Core i9-11900KF. Both processors carry 16 MB (total) of L3 cache.
| Feature | Ryzen 5 8400F | Core i9-11900KF |
|---|---|---|
| Cores / Threads | 6 / 12 | 8 / 16+33% |
| Boost Clock | 4.7 GHz | 5.2 GHz+11% |
| Base Clock | 4.2 GHz+20% | 3.5 GHz |
| L3 Cache | 16 MB (total) | 16 MB (total) |
| L2 Cache | 1 MB (per core)+300% | 256K (per core) |
| Process | 4 nm-71% | 14 nm |
| Architecture | Phoenix (2023−2024) | Rocket Lake (2021) |
| PassMark | 24,554 | 24,585 |
| Cinebench R23 Multi | — | 15,500 |
Memory & Platform
The Ryzen 5 8400F uses the AM5 socket (PCIe 4.0), while the Core i9-11900KF uses LGA1200 (PCIe 4.0) — making them incompatible on the same motherboard.
| Feature | Ryzen 5 8400F | Core i9-11900KF |
|---|---|---|
| Socket | AM5 | LGA1200 |
| PCIe Generation | PCIe 4.0 | PCIe 4.0 |
| Max RAM Speed | — | DDR4-3200 |
| Max RAM Capacity | — | 128 GB |
| RAM Channels | — | 2 |
| ECC Support | — | ❌ |
| PCIe Lanes | — | 20 |
Advanced Features
Virtualization: not specified (Ryzen 5 8400F) / VT-x, VT-d (Core i9-11900KF).
| Feature | Ryzen 5 8400F | Core i9-11900KF |
|---|---|---|
| Integrated GPU | — | No |
| Unlocked | — | Yes |
| AVX-512 | — | Yes |
| Virtualization | — | VT-x, VT-d |
Value Analysis
The Ryzen 5 8400F launched at $303 MSRP, while the Core i9-11900KF debuted at $513. At current prices ($55 vs $349), the Ryzen 5 8400F is $294 cheaper. In terms of value (PassMark points per dollar), the Ryzen 5 8400F delivers 446.4 pts/$ vs 70.4 pts/$ for the Core i9-11900KF — making the Ryzen 5 8400F the 145.5% better value option.
| Feature | Ryzen 5 8400F | Core i9-11900KF |
|---|---|---|
| MSRP | $303-41% | $513 |
| Avg Price (30d) | $55-84% | $349 |
| Performance per Dollar | 446.4+534% | 70.4 |
| Release Date | 2024 | 2021 |
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