Ryzen 9 3900 vs Core i5-12400F
Ryzen 9 3900
Core i5-12400F
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 9 3900
Performance Per Dollar Core i5-12400F
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Ryzen 9 3900 | Core i5-12400F |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ⚠️ Higher cost ($150) | ✅ More affordable ($110) |
| Longevity | ✨ Modern (Matisse (Zen 2) (2019−2020) / 7 nm, 12 nm) | ✨ Modern (Alder Lake-S (2022) / Intel 7 nm) |
💎 Value Proposition
| Insight | Ryzen 9 3900 | Core i5-12400F |
|---|---|---|
| Cost Efficiency | ✅ Better overall value (+15%) | ❌ Lower cost efficiency |
| Upfront Cost | ⚠️ Higher cost ($150) | ✅ More affordable ($110) |
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 9 3900 and Core i5-12400F
Ryzen 9 3900
The Ryzen 9 3900 is manufactured by AMD. It was released in 24 September 2019 (6 years ago). It is based on the Matisse (Zen 2) (2019−2020) architecture. It features 12 cores and 24 threads. Base frequency is 3.1 GHz, with boost up to 4.3 GHz. L3 cache: 64 MB. L2 cache: 512 kB (per core). Built on 7 nm, 12 nm process technology. Socket: AM4. Thermal design power (TDP): 65 Watt. Memory support: DDR4-3200. Passmark benchmark score: 30,588 points. Launch price was $499.
Core i5-12400F
The Core i5-12400F is manufactured by Intel. It was released in 4 January 2022 (3 years ago). It is based on the Alder Lake-S (2022) architecture. It features 6 cores and 12 threads. Base frequency is 2.5 GHz, with boost up to 4.4 GHz. L3 cache: 18 MB (total). L2 cache: 1.25 MB (per core). Built on Intel 7 nm process technology. Socket: LGA1700. Thermal design power (TDP): 65 Watt. Memory support: DDR5-4800, DDR4-3200. Passmark benchmark score: 19,532 points. Launch price was $180.
Processing Power
The Ryzen 9 3900 packs 12 cores / 24 threads, while the Core i5-12400F offers 6 cores / 12 threads — the Ryzen 9 3900 has 6 more cores. Boost clocks reach 4.3 GHz on the Ryzen 9 3900 versus 4.4 GHz on the Core i5-12400F — a 2.3% clock advantage for the Core i5-12400F (base: 3.1 GHz vs 2.5 GHz). The Ryzen 9 3900 uses the Matisse (Zen 2) (2019−2020) architecture (7 nm, 12 nm), while the Core i5-12400F uses Alder Lake-S (2022) (Intel 7 nm). In PassMark, the Ryzen 9 3900 scores 30,588 against the Core i5-12400F's 19,532 — a 44.1% lead for the Ryzen 9 3900. Cinebench R23 multi-core: 17,700 vs 12,380 (35.4% advantage for the Ryzen 9 3900). Geekbench 6 single-core — the metric most relevant to gaming — records 1,713 vs 1,700, a 0.8% lead for the Ryzen 9 3900 that directly translates to higher frame rates. Multi-core Geekbench: 10,983 vs 657 (177.4% advantage for the Ryzen 9 3900). L3 cache: 64 MB on the Ryzen 9 3900 vs 18 MB (total) on the Core i5-12400F.
| Feature | Ryzen 9 3900 | Core i5-12400F |
|---|---|---|
| Cores / Threads | 12 / 24+100% | 6 / 12 |
| Boost Clock | 4.3 GHz | 4.4 GHz+2% |
| Base Clock | 3.1 GHz+24% | 2.5 GHz |
| L3 Cache | 64 MB+256% | 18 MB (total) |
| L2 Cache | 512 kB (per core) | 1.25 MB (per core)+150% |
| Process | 7 nm, 12 nm | Intel 7 nm |
| Architecture | Matisse (Zen 2) (2019−2020) | Alder Lake-S (2022) |
| PassMark | 30,588+57% | 19,532 |
| Cinebench R23 Multi | 17,700+43% | 12,380 |
| Geekbench 6 Single | 1,713 | 1,700 |
| Geekbench 6 Multi | 10,983+1572% | 657 |
Memory & Platform
The Ryzen 9 3900 uses the AM4 socket (PCIe 4.0), while the Core i5-12400F uses LGA1700 (PCIe 3.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR4-3200 on the Ryzen 9 3900 versus DDR5-4800, DDR4-3200 on the Core i5-12400F — the Core i5-12400F supports 22.2% faster memory, which can translate to measurable gains in memory-sensitive workloads. Both support up to 128 GB of RAM. Both feature 2-channel memory with ECC support. PCIe lanes: 24 (Ryzen 9 3900) vs 20 (Core i5-12400F) — the Ryzen 9 3900 offers 4 more lanes for additional GPUs or NVMe drives. Chipset compatibility: X570,B550,X470,B450 (Ryzen 9 3900) and H610,B660,H670,Z690,B760,H770,Z790 (Core i5-12400F).
| Feature | Ryzen 9 3900 | Core i5-12400F |
|---|---|---|
| Socket | AM4 | LGA1700 |
| PCIe Generation | PCIe 4.0+33% | PCIe 3.0 |
| Max RAM Speed | DDR4-3200 | DDR5-4800, DDR4-3200+25% |
| Max RAM Capacity | 128 GB | 128 GB |
| RAM Channels | 2 | 2 |
| ECC Support | ❌ | ❌ |
| PCIe Lanes | 24+20% | 20 |
Advanced Features
Virtualization support: AMD-V (Ryzen 9 3900) vs VT-x, VT-d, EPT (Core i5-12400F). Primary use case: Ryzen 9 3900 targets Workstation Desktop (low power), Core i5-12400F targets Gaming Performance/Value. Direct competitor: Ryzen 9 3900 rivals Core i9-9900; Core i5-12400F rivals Ryzen 5 5600.
| Feature | Ryzen 9 3900 | Core i5-12400F |
|---|---|---|
| Integrated GPU | No | No |
| Unlocked | Yes | — |
| AVX-512 | No | — |
| Virtualization | AMD-V | VT-x, VT-d, EPT |
| Target Use | Workstation Desktop (low power) | Gaming Performance/Value |
Value Analysis
The Ryzen 9 3900 launched at $499 MSRP, while the Core i5-12400F debuted at $174. At current prices ($150 vs $110), the Core i5-12400F is $40 cheaper. In terms of value (PassMark points per dollar), the Ryzen 9 3900 delivers 203.9 pts/$ vs 177.6 pts/$ for the Core i5-12400F — making the Ryzen 9 3900 the 13.8% better value option.
| Feature | Ryzen 9 3900 | Core i5-12400F |
|---|---|---|
| MSRP | $499 | $174-65% |
| Avg Price (30d) | $150 | $110-27% |
| Performance per Dollar | 203.9+15% | 177.6 |
| Release Date | 2019 | 2022 |
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