Athlon II X3 425 vs Core 2 Duo SU9400
Athlon II X3 425
Core 2 Duo SU9400
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 Athlon II X3 425 is positioned at rank 792 and the Core 2 Duo SU9400 is on rank 409, so the Core 2 Duo SU9400 offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Athlon II X3 425
Performance Per Dollar Core 2 Duo SU9400
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Athlon II X3 425 | Core 2 Duo SU9400 |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ⚠️ Higher cost ($5) | ✅ More affordable ($0) |
| Longevity | 🛑 Legacy (Rana (2009−2011) / 45 nm) | 🛑 Legacy (Penryn (2008−2011) / 45 nm) |
💎 Value Proposition
| Insight | Athlon II X3 425 | Core 2 Duo SU9400 |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ⚠️ Higher cost ($5) | ✅ More affordable ($0) |
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 Athlon II X3 425 and Core 2 Duo SU9400
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.
Core 2 Duo SU9400
The Core 2 Duo SU9400 is manufactured by Intel. It was released in 20 August 2008 (17 years ago). It is based on the Penryn (2008−2011) architecture. It features 2 cores and 2 threads. Base frequency is 1.4 GHz, with boost up to 1.4 GHz. L3 cache: 3 MB L2 Cache. L2 cache: 3 MB. Built on 45 nm process technology. Socket: BGA956. Thermal design power (TDP): 10 Watt. Passmark benchmark score: 1,596 points. Launch price was $262.
Processing Power
The Athlon II X3 425 packs 3 cores / 3 threads, while the Core 2 Duo SU9400 offers 2 cores / 2 threads — the Athlon II X3 425 has 1 more core. Boost clocks reach 2.7 GHz on the Athlon II X3 425 versus 1.4 GHz on the Core 2 Duo SU9400 — a 63.4% clock advantage for the Athlon II X3 425 (base: 2.7 GHz vs 1.4 GHz). The Athlon II X3 425 uses the Rana (2009−2011) architecture (45 nm), while the Core 2 Duo SU9400 uses Penryn (2008−2011) (45 nm). In PassMark, the Athlon II X3 425 scores 1,595 against the Core 2 Duo SU9400's 1,596 — a 0.1% lead for the Core 2 Duo SU9400. L3 cache: 0 kB on the Athlon II X3 425 vs 3 MB L2 Cache on the Core 2 Duo SU9400.
| Feature | Athlon II X3 425 | Core 2 Duo SU9400 |
|---|---|---|
| Cores / Threads | 3 / 3+50% | 2 / 2 |
| Boost Clock | 2.7 GHz+93% | 1.4 GHz |
| Base Clock | 2.7 GHz+93% | 1.4 GHz |
| L3 Cache | 0 kB | 3 MB L2 Cache |
| L2 Cache | 512 kB (per core) | 3 MB+500% |
| Process | 45 nm | 45 nm |
| Architecture | Rana (2009−2011) | Penryn (2008−2011) |
| PassMark | 1,595 | 1,596 |
Memory & Platform
The Athlon II X3 425 uses the AM3 socket (PCIe 2.0), while the Core 2 Duo SU9400 uses BGA956 (PCIe 1.1) — making them incompatible on the same motherboard.
| Feature | Athlon II X3 425 | Core 2 Duo SU9400 |
|---|---|---|
| Socket | AM3 | BGA956 |
| PCIe Generation | PCIe 2.0+82% | PCIe 1.1 |
| Max RAM Speed | DDR3-1333 | — |
| Max RAM Capacity | 32 GB | — |
| RAM Channels | 2 | — |
| ECC Support | ❌ | — |
| PCIe Lanes | 0 | — |
Top Performing CPUs
The most powerful cpus ranked by PassMark CPU Mark benchmark scores.
You May Also Compare
Similar CPU comparisons based on Athlon II X3 425 and Core 2 Duo SU9400
