Atom Z550 vs Atom D425
Atom Z550
Atom D425
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 Atom Z550 is positioned at rank 592 and the Atom D425 is on rank 1088, so the Atom Z550 offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Atom Z550
Performance Per Dollar Atom D425
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Atom Z550 | Atom D425 |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | Equivalent pricing | Equivalent pricing |
| Longevity | 🛑 Legacy (Silverthorne (2008−2010) / 45 nm) | 🛑 Legacy (Pineview (2009−2011) / 45 nm) |
💎 Value Proposition
| Insight | Atom Z550 | Atom D425 |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | Equivalent pricing | Equivalent pricing |
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 Atom Z550 and Atom D425
Atom Z550
The Atom Z550 is manufactured by Intel. It was released in 8 April 2009 (16 years ago). It is based on the Silverthorne (2008−2010) architecture. It features 1 cores and 2 threads. Base frequency is 2 GHz, with boost up to 2 GHz. L3 cache: 0 kB. L2 cache: 512 kB (per core). Built on 45 nm process technology. Socket: PBGA441. Thermal design power (TDP): 2.4 Watt. Memory support: unknown. Passmark benchmark score: 375 points. Launch price was $69.
Atom D425
The Atom D425 is manufactured by Intel. It was released in 21 June 2010 (15 years ago). It is based on the Pineview (2009−2011) architecture. It features 1 cores and 2 threads. Base frequency is 1.8 GHz, with boost up to 1.83 GHz. L3 cache: 0 kB. L2 cache: 512 kB (per core). Built on 45 nm process technology. Socket: FCBGA559. Thermal design power (TDP): 10 Watt. Memory support: DDR2, DDR3. Passmark benchmark score: 385 points. Launch price was $993.
Processing Power
Both the Atom Z550 and Atom D425 share an identical 1-core/2-thread configuration. Boost clocks reach 2 GHz on the Atom Z550 versus 1.83 GHz on the Atom D425 — a 8.9% clock advantage for the Atom Z550 (base: 2 GHz vs 1.8 GHz). The Atom Z550 uses the Silverthorne (2008−2010) architecture (45 nm), while the Atom D425 uses Pineview (2009−2011) (45 nm). In PassMark, the Atom Z550 scores 375 against the Atom D425's 385 — a 2.6% lead for the Atom D425. Both processors carry 0 kB of L3 cache.
| Feature | Atom Z550 | Atom D425 |
|---|---|---|
| Cores / Threads | 1 / 2 | 1 / 2 |
| Boost Clock | 2 GHz+9% | 1.83 GHz |
| Base Clock | 2 GHz+11% | 1.8 GHz |
| L3 Cache | 0 kB | 0 kB |
| L2 Cache | 512 kB (per core) | 512 kB (per core) |
| Process | 45 nm | 45 nm |
| Architecture | Silverthorne (2008−2010) | Pineview (2009−2011) |
| PassMark | 375 | 385+3% |
Memory & Platform
The Atom Z550 uses the PBGA441 socket (PCIe 2.0), while the Atom D425 uses FCBGA559 (PCIe 2.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR2-533 on the Atom Z550 versus DDR3-800 on the Atom D425 — the Atom D425 supports 40% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Atom D425 supports up to 4 GB of RAM compared to 2 GB — 66.7% more capacity for professional workloads. Both feature 1-channel memory with ECC support. Both provide 0 PCIe lanes. Chipset compatibility: Intel US15W (Atom Z550) and Intel NM10 (Atom D425).
| Feature | Atom Z550 | Atom D425 |
|---|---|---|
| Socket | PBGA441 | FCBGA559 |
| PCIe Generation | PCIe 2.0 | PCIe 2.0 |
| Max RAM Speed | DDR2-533 | DDR3-800+50% |
| Max RAM Capacity | 2 GB | 4 GB+100% |
| RAM Channels | 1 | 1 |
| ECC Support | ❌ | ❌ |
| PCIe Lanes | 0 | 0 |
Advanced Features
The Atom D425 includes integrated graphics (Intel GMA 3150), while the Atom Z550 requires a dedicated GPU.
| Feature | Atom Z550 | Atom D425 |
|---|---|---|
| Integrated GPU | No | Yes |
| IGPU Model | — | Intel GMA 3150 |
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