A6-7400K vs Ryzen 9 5900X
A6-7400K
Ryzen 9 5900X
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. The A6-7400K is positioned at rank #869 in our cost-efficiency ranking, representing a Lower cost-benefit for your build. 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 A6-7400K
Performance Per Dollar Ryzen 9 5900X
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | A6-7400K | Ryzen 9 5900X |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ✅ More affordable ($43) | ⚠️ Higher cost ($350) |
| Longevity | 🛑 Legacy (Kaveri (2014−2015) / 28 nm) | ✨ Modern (Vermeer (Zen3) (2020−2022) / 7 nm, 12 nm) |
💎 Value Proposition
| Insight | A6-7400K | Ryzen 9 5900X |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ✅ Better overall value (+185%) |
| Upfront Cost | ✅ More affordable ($43) | ⚠️ Higher cost ($350) |
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 A6-7400K and Ryzen 9 5900X
A6-7400K
The A6-7400K is manufactured by AMD. It was released in 2014-01-01. It is based on the Kaveri (2014−2015) architecture. It features 2 cores and 2 threads. Base frequency is 3.5 GHz, with boost up to 3.9 GHz. L2 cache: 1024 kB. Built on 28 nm process technology. Socket: FM2+. Thermal design power (TDP): 65 Watt. Memory support: DDR3-1866. Passmark benchmark score: 1,678 points. Launch price was $70.
Ryzen 9 5900X
The Ryzen 9 5900X is manufactured by AMD. It was released in 5 November 2020 (5 years ago). It is based on the Vermeer (Zen3) (2020−2022) architecture. It features 12 cores and 24 threads. Base frequency is 3.7 GHz, with boost up to 4.8 GHz. L3 cache: 64 MB. L2 cache: 512K (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: 38,955 points. Launch price was $549.
Processing Power
The A6-7400K packs 2 cores / 2 threads, while the Ryzen 9 5900X offers 12 cores / 24 threads — the Ryzen 9 5900X has 10 more cores. Boost clocks reach 3.9 GHz on the A6-7400K versus 4.8 GHz on the Ryzen 9 5900X — a 20.7% clock advantage for the Ryzen 9 5900X (base: 3.5 GHz vs 3.7 GHz). The A6-7400K uses the Kaveri (2014−2015) architecture (28 nm), while the Ryzen 9 5900X uses Vermeer (Zen3) (2020−2022) (7 nm, 12 nm). In PassMark, the A6-7400K scores 1,678 against the Ryzen 9 5900X's 38,955 — a 183.5% lead for the Ryzen 9 5900X.
| Feature | A6-7400K | Ryzen 9 5900X |
|---|---|---|
| Cores / Threads | 2 / 2 | 12 / 24+500% |
| Boost Clock | 3.9 GHz | 4.8 GHz+23% |
| Base Clock | 3.5 GHz | 3.7 GHz+6% |
| L3 Cache | — | 64 MB |
| L2 Cache | 1024 kB+100% | 512K (per core) |
| Process | 28 nm | 7 nm, 12 nm-75% |
| Architecture | Kaveri (2014−2015) | Vermeer (Zen3) (2020−2022) |
| PassMark | 1,678 | 38,955+2222% |
| Cinebench R23 Multi | — | 21,000 |
| Geekbench 6 Single | — | 2,174 |
| Geekbench 6 Multi | — | 11,888 |
Memory & Platform
The A6-7400K uses the FM2+ socket (PCIe 3.0), while the Ryzen 9 5900X uses AM4 (PCIe 4.0) — making them incompatible on the same motherboard. Maximum memory speed reaches 1866 on the A6-7400K versus DDR4-3200 on the Ryzen 9 5900X — the A6-7400K supports 199.1% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Ryzen 9 5900X supports up to 128 GB of RAM compared to 32 — 120% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 16 (A6-7400K) vs 24 (Ryzen 9 5900X) — the Ryzen 9 5900X offers 8 more lanes for additional GPUs or NVMe drives. Chipset compatibility: FM2+ (A6-7400K) and A320,B350,X370,B450,X470,B550,X570 (Ryzen 9 5900X).
| Feature | A6-7400K | Ryzen 9 5900X |
|---|---|---|
| Socket | FM2+ | AM4 |
| PCIe Generation | PCIe 3.0 | PCIe 4.0+33% |
| Max RAM Speed | 1866+46550% | DDR4-3200 |
| Max RAM Capacity | 32 | 128 GB+419430300% |
| RAM Channels | 2 | 2 |
| ECC Support | ❌ | ✅ |
| PCIe Lanes | 16 | 24+50% |
Advanced Features
Both processors feature an unlocked multiplier for overclocking. Virtualization support: true (A6-7400K) vs AMD-V (Ryzen 9 5900X). The A6-7400K includes integrated graphics (Radeon R5 Graphics), while the Ryzen 9 5900X requires a dedicated GPU. Primary use case: Ryzen 9 5900X targets Workstation. Direct competitor: A6-7400K rivals Pentium G3420; Ryzen 9 5900X rivals Core i9-12900K.
| Feature | A6-7400K | Ryzen 9 5900X |
|---|---|---|
| Integrated GPU | Yes | No |
| IGPU Model | Radeon R5 Graphics | — |
| Unlocked | Yes | Yes |
| AVX-512 | No | No |
| Virtualization | true | AMD-V |
| Target Use | — | Workstation |
Value Analysis
The A6-7400K launched at $101 MSRP, while the Ryzen 9 5900X debuted at $549. At current prices ($43 vs $350), the A6-7400K is $307 cheaper. In terms of value (PassMark points per dollar), the A6-7400K delivers 39.0 pts/$ vs 111.3 pts/$ for the Ryzen 9 5900X — making the Ryzen 9 5900X the 96.2% better value option.
| Feature | A6-7400K | Ryzen 9 5900X |
|---|---|---|
| MSRP | $101-82% | $549 |
| Avg Price (30d) | $43-88% | $350 |
| Performance per Dollar | 39.0 | 111.3+185% |
| Release Date | 2014 | 2020 |
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