A6-6400B vs Athlon II X3 425
A6-6400B
Athlon II X3 425
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. The A6-6400B is positioned at rank 655 and the Athlon II X3 425 is on rank 792, so the A6-6400B offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar A6-6400B
Performance Per Dollar Athlon II X3 425
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | A6-6400B | Athlon II X3 425 |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ✅ More affordable ($0) | ⚠️ Higher cost ($5) |
| Longevity | 🛑 Legacy (Richland (2013−2014) / 32 nm) | 🛑 Legacy (Rana (2009−2011) / 45 nm) |
💎 Value Proposition
| Insight | A6-6400B | Athlon II X3 425 |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($0) | ⚠️ Higher cost ($5) |
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 A6-6400B and Athlon II X3 425
A6-6400B
The A6-6400B 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. L2 cache: 1 MB (total). Built on 32 nm process technology. Socket: FM2. Thermal design power (TDP): 65 Watt. Memory support: DDR3-1866. Passmark benchmark score: 1,573 points. Launch price was $70.
Athlon II X3 425
The Athlon II X3 425 is manufactured by AMD. It was released in 20 October 2009 (16 years ago). It is based on the Rana (2009−2011) architecture. It features 3 cores and 3 threads. Base frequency is 2.7 GHz, with boost up to 2.7 GHz. L3 cache: 0 kB. L2 cache: 512 kB (per core). Built on 45 nm process technology. Socket: AM3. Thermal design power (TDP): 95 Watt. Memory support: DDR3. Passmark benchmark score: 1,595 points. Launch price was $42.
Processing Power
The A6-6400B packs 2 cores / 2 threads, while the Athlon II X3 425 offers 3 cores / 3 threads — the Athlon II X3 425 has 1 more core. Boost clocks reach 4.1 GHz on the A6-6400B versus 2.7 GHz on the Athlon II X3 425 — a 41.2% clock advantage for the A6-6400B (base: 3.9 GHz vs 2.7 GHz). The A6-6400B uses the Richland (2013−2014) architecture (32 nm), while the Athlon II X3 425 uses Rana (2009−2011) (45 nm). In PassMark, the A6-6400B scores 1,573 against the Athlon II X3 425's 1,595 — a 1.4% lead for the Athlon II X3 425.
| Feature | A6-6400B | Athlon II X3 425 |
|---|---|---|
| Cores / Threads | 2 / 2 | 3 / 3+50% |
| Boost Clock | 4.1 GHz+52% | 2.7 GHz |
| Base Clock | 3.9 GHz+44% | 2.7 GHz |
| L3 Cache | — | 0 kB |
| L2 Cache | 1 MB (total)+100% | 512 kB (per core) |
| Process | 32 nm-29% | 45 nm |
| Architecture | Richland (2013−2014) | Rana (2009−2011) |
| PassMark | 1,573 | 1,595+1% |
Memory & Platform
The A6-6400B uses the FM2 socket (PCIe 3.0), while the Athlon II X3 425 uses AM3 (PCIe 2.0) — making them incompatible on the same motherboard. Maximum memory speed reaches 1866 on the A6-6400B versus DDR3-1333 on the Athlon II X3 425 — the A6-6400B supports 199.4% faster memory, which can translate to measurable gains in memory-sensitive workloads. Both support up to 32 of RAM. Both feature 2-channel memory with ECC support. PCIe lanes: 16 (A6-6400B) vs 0 (Athlon II X3 425) — the A6-6400B offers 16 more lanes for additional GPUs or NVMe drives. Chipset compatibility: FM2 (A6-6400B) and AMD AM3 (Athlon II X3 425).
| Feature | A6-6400B | Athlon II X3 425 |
|---|---|---|
| Socket | FM2 | AM3 |
| PCIe Generation | PCIe 3.0+50% | PCIe 2.0 |
| Max RAM Speed | 1866+62100% | DDR3-1333 |
| Max RAM Capacity | 32 | 32 GB+104857500% |
| RAM Channels | 2 | 2 |
| ECC Support | ❌ | ❌ |
| PCIe Lanes | 16 | 0 |
Advanced Features
Virtualization: true (A6-6400B) / not specified (Athlon II X3 425). The A6-6400B includes integrated graphics (Radeon HD 8470D), while the Athlon II X3 425 requires a dedicated GPU. Direct competitor: A6-6400B rivals Pentium G3220.
| Feature | A6-6400B | Athlon II X3 425 |
|---|---|---|
| Integrated GPU | Yes | No |
| IGPU Model | Radeon HD 8470D | — |
| Unlocked | No | — |
| AVX-512 | No | — |
| Virtualization | true | — |
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