A6-6400K vs Ryzen 7 5800X
A6-6400K
Popular choices:
Ryzen 7 5800X
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 A6-6400K is positioned at rank #688 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 A6-6400K
Performance Per Dollar Ryzen 7 5800X
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | A6-6400K | Ryzen 7 5800X |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ✅ More affordable ($0) | ⚠️ Higher cost ($180) |
| Longevity | 🛑 Legacy (Richland (2013−2014) / 32 nm) | ✨ Modern (Vermeer (Zen 3) (2020−2022) / 7 nm, 12 nm) |
💎 Value Proposition
| Insight | A6-6400K | Ryzen 7 5800X |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($0) | ⚠️ Higher cost ($180) |
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 A6-6400K and Ryzen 7 5800X
A6-6400K
The A6-6400K is manufactured by AMD. It was released in 2014-01-01. It is based on the Richland (2013−2014) architecture. It features 2 cores and 2 threads. Base frequency is 3.9 GHz, with boost up to 4.1 GHz. L3 cache: 0 kB. L2 cache: 1024 kB. Built on 32 nm process technology. Socket: FM2. Thermal design power (TDP): 65 Watt. Memory support: DDR3-1866. Passmark benchmark score: 1,511 points. Launch price was $70.
Ryzen 7 5800X
The Ryzen 7 5800X is manufactured by AMD. It was released in 5 November 2020 (5 years ago). It is based on the Vermeer (Zen 3) (2020−2022) architecture. It features 8 cores and 16 threads. Base frequency is 3.8 GHz, with boost up to 4.7 GHz. L3 cache: 32 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. Passmark benchmark score: 27,712 points. Launch price was $449.
Processing Power
The A6-6400K packs 2 cores / 2 threads, while the Ryzen 7 5800X offers 8 cores / 16 threads — the Ryzen 7 5800X has 6 more cores. Boost clocks reach 4.1 GHz on the A6-6400K versus 4.7 GHz on the Ryzen 7 5800X — a 13.6% clock advantage for the Ryzen 7 5800X (base: 3.9 GHz vs 3.8 GHz). The A6-6400K uses the Richland (2013−2014) architecture (32 nm), while the Ryzen 7 5800X uses Vermeer (Zen 3) (2020−2022) (7 nm, 12 nm). In PassMark, the A6-6400K scores 1,511 against the Ryzen 7 5800X's 27,712 — a 179.3% lead for the Ryzen 7 5800X. L3 cache: 0 kB on the A6-6400K vs 32 MB on the Ryzen 7 5800X.
| Feature | A6-6400K | Ryzen 7 5800X |
|---|---|---|
| Cores / Threads | 2 / 2 | 8 / 16+300% |
| Boost Clock | 4.1 GHz | 4.7 GHz+15% |
| Base Clock | 3.9 GHz+3% | 3.8 GHz |
| L3 Cache | 0 kB | 32 MB |
| L2 Cache | 1024 kB+100% | 512K (per core) |
| Process | 32 nm | 7 nm, 12 nm-78% |
| Architecture | Richland (2013−2014) | Vermeer (Zen 3) (2020−2022) |
| PassMark | 1,511 | 27,712+1734% |
Memory & Platform
The A6-6400K uses the FM2 socket (PCIe 3.0), while the Ryzen 7 5800X uses AM4 (PCIe 4.0) — making them incompatible on the same motherboard. Maximum memory speed reaches 1866 on the A6-6400K versus DDR4-3200 on the Ryzen 7 5800X — the A6-6400K supports 199.1% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Ryzen 7 5800X 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 (A6-6400K) vs 24 (Ryzen 7 5800X) — the Ryzen 7 5800X offers 8 more lanes for additional GPUs or NVMe drives. Chipset compatibility: FM2 (A6-6400K) and AMD 500 series,AMD 400 series,AMD 300 series (Ryzen 7 5800X).
| Feature | A6-6400K | Ryzen 7 5800X |
|---|---|---|
| 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 (A6-6400K) vs AMD-V (Ryzen 7 5800X). The A6-6400K includes integrated graphics (Radeon HD 8470D), while the Ryzen 7 5800X requires a dedicated GPU. Primary use case: Ryzen 7 5800X targets Desktop. Direct competitor: A6-6400K rivals Pentium G3258.
| Feature | A6-6400K | Ryzen 7 5800X |
|---|---|---|
| Integrated GPU | Yes | No |
| IGPU Model | Radeon HD 8470D | — |
| Unlocked | Yes | Yes |
| AVX-512 | No | No |
| Virtualization | true | AMD-V |
| Target Use | — | Desktop |
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