CPU
GPU
Atom Z540
Atom N280
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 Z540 is positioned at rank 334 and the Atom N280 is on rank 367, so the Atom Z540 offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Atom Z540
Performance Per Dollar Atom N280
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Atom Z540 | Atom N280 |
|---|---|---|
| Gaming | Balanced gaming performance | Balanced gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | Equivalent pricing | Equivalent pricing |
| Longevity | 🛑 Legacy (Silverthorne (2008−2010) / 45 nm) | 🛑 Legacy (DiamondVille (2008−2009) / 45 nm) |
💎 Value Proposition
| Insight | Atom Z540 | Atom N280 |
|---|---|---|
| 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 Z540 and Atom N280
Atom Z540
The Atom Z540 is manufactured by Intel. It was released in 2 April 2008 (17 years ago). It is based on the Silverthorne (2008−2010) architecture. It features 1 cores and 2 threads. Base frequency is 1.86 GHz, with boost up to 0.07 GHz. L3 cache: 0 kB. L2 cache: 512 kB. Built on 45 nm process technology. Socket: PBGA441. Thermal design power (TDP): 2.4 Watt. Passmark benchmark score: 305 points. Launch price was $160.
Atom N280
The Atom N280 is manufactured by Intel. It was released in 1 February 2009 (16 years ago). It is based on the DiamondVille (2008−2009) architecture. It features 1 cores and 2 threads. Base frequency is 1.66 GHz, with boost up to 0.07 GHz. L3 cache: 0 kB. L2 cache: 512 kB. Built on 45 nm process technology. Socket: PBGA437. Thermal design power (TDP): 2.5 Watt. Passmark benchmark score: 285 points. Launch price was $69.
Processing Power
Both the Atom Z540 and Atom N280 share an identical 1-core/2-thread configuration. Boost clocks reach 0.07 GHz on the Atom Z540 versus 0.07 GHz on the Atom N280 — identical boost frequencies (base: 1.86 GHz vs 1.66 GHz). The Atom Z540 uses the Silverthorne (2008−2010) architecture (45 nm), while the Atom N280 uses DiamondVille (2008−2009) (45 nm). In PassMark, the Atom Z540 scores 305 against the Atom N280's 285 — a 6.8% lead for the Atom Z540. Both processors carry 0 kB of L3 cache.
| Feature | Atom Z540 | Atom N280 |
|---|---|---|
| Cores / Threads | 1 / 2 | 1 / 2 |
| Boost Clock | 0.07 GHz | 0.07 GHz |
| Base Clock | 1.86 GHz+12% | 1.66 GHz |
| L3 Cache | 0 kB | 0 kB |
| L2 Cache | 512 kB | 512 kB |
| Process | 45 nm | 45 nm |
| Architecture | Silverthorne (2008−2010) | DiamondVille (2008−2009) |
| PassMark | 305+7% | 285 |
Memory & Platform
The Atom Z540 uses the PBGA441 socket (PCIe 2.0), while the Atom N280 uses PBGA437 (PCIe 2.0) — making them incompatible on the same motherboard. Both support up to DDR2-533 memory speed. Both support up to 2 GB of RAM. Both feature 1-channel memory with ECC support. Both provide 0 PCIe lanes. Chipset compatibility: Intel US15W (Atom Z540) and Intel PBGA437 (Atom N280).
| Feature | Atom Z540 | Atom N280 |
|---|---|---|
| Socket | PBGA441 | PBGA437 |
| PCIe Generation | PCIe 2.0 | PCIe 2.0 |
| Max RAM Speed | DDR2-533 | DDR2-533 |
| Max RAM Capacity | 2 GB | 2 GB |
| RAM Channels | 1 | 1 |
| ECC Support | ❌ | ❌ |
| PCIe Lanes | 0 | 0 |
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The most powerful cpus ranked by PassMark CPU Mark benchmark scores.
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