CPU
GPU
Pentium III 1400S
Atom N270
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 Pentium III 1400S is positioned at rank 1128 and the Atom N270 is on rank 411, so the Atom N270 offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Pentium III 1400S
Performance Per Dollar Atom N270
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Pentium III 1400S | Atom N270 |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ⚠️ Higher cost ($250) | ✅ More affordable ($0) |
| Longevity | 🛑 Legacy (Tualatin (2000−2002) / 130 nm) | 🛑 Legacy (DiamondVille (2008−2009) / 45 nm) |
💎 Value Proposition
| Insight | Pentium III 1400S | Atom N270 |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ⚠️ Higher cost ($250) | ✅ 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 Pentium III 1400S and Atom N270
Pentium III 1400S
The Pentium III 1400S is manufactured by Intel. It was released in 2007-01-01. It is based on the Tualatin (2000−2002) architecture. It features 1 cores and 1 threads. Max frequency: 1.4 GHz. L3 cache: 0 kB. L2 cache: 512 kB. Built on 130 nm process technology. Socket: PGA370. Thermal design power (TDP): 32 Watt. Passmark benchmark score: 228 points. Launch price was $69.
Atom N270
The Atom N270 is manufactured by Intel. It was released in 2 April 2008 (17 years ago). It is based on the DiamondVille (2008−2009) architecture. It features 1 cores and 2 threads. Base frequency is 1.6 GHz, with boost up to 0.1 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: 265 points. Launch price was $44.
Processing Power
The Pentium III 1400S packs 1 cores / 1 threads, matching the Atom N270's 1 cores. Boost clocks reach 1.4 GHz on the Pentium III 1400S versus 0.1 GHz on the Atom N270 — a 173.3% clock advantage for the Pentium III 1400S. The Pentium III 1400S uses the Tualatin (2000−2002) architecture (130 nm), while the Atom N270 uses DiamondVille (2008−2009) (45 nm). In PassMark, the Pentium III 1400S scores 228 against the Atom N270's 265 — a 15% lead for the Atom N270. Both processors carry 0 kB of L3 cache.
| Feature | Pentium III 1400S | Atom N270 |
|---|---|---|
| Cores / Threads | 1 / 1 | 1 / 2 |
| Boost Clock | 1.4 GHz+1300% | 0.1 GHz |
| Base Clock | — | 1.6 GHz |
| L3 Cache | 0 kB | 0 kB |
| L2 Cache | 512 kB | 512 kB |
| Process | 130 nm | 45 nm-65% |
| Architecture | Tualatin (2000−2002) | DiamondVille (2008−2009) |
| PassMark | 228 | 265+16% |
Memory & Platform
The Pentium III 1400S uses the PGA370 socket (PCIe 1.1), while the Atom N270 uses PBGA437 (PCIe 2.0) — making them incompatible on the same motherboard. Maximum memory speed reaches PC133 on the Pentium III 1400S versus DDR2-533 on the Atom N270 — the Pentium III 1400S supports 194.1% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Pentium III 1400S 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 815,VIA Apollo Pro 133T (Pentium III 1400S) and Intel PBGA437 (Atom N270).
| Feature | Pentium III 1400S | Atom N270 |
|---|---|---|
| Socket | PGA370 | PBGA437 |
| PCIe Generation | PCIe 1.1 | PCIe 2.0+82% |
| Max RAM Speed | PC133+6550% | DDR2-533 |
| Max RAM Capacity | 4 GB+100% | 2 GB |
| RAM Channels | 1 | 1 |
| ECC Support | ✅ | ❌ |
| PCIe Lanes | 0 | 0 |
Advanced Features
Virtualization: No (Pentium III 1400S) / not specified (Atom N270).
| Feature | Pentium III 1400S | Atom N270 |
|---|---|---|
| Integrated GPU | No | No |
| AVX-512 | No | — |
| Virtualization | No | — |
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