Mobile Sempron SI-42 vs Pentium 4 2.40
Mobile Sempron SI-42
Pentium 4 2.40
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 Mobile Sempron SI-42 is positioned at rank 1175 and the Pentium 4 2.40 is on rank 1108, so the Pentium 4 2.40 offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Mobile Sempron SI-42
Performance Per Dollar Pentium 4 2.40
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Mobile Sempron SI-42 | Pentium 4 2.40 |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ✅ More affordable ($0) | ⚠️ Higher cost ($193) |
| Longevity | 🛑 Legacy (Sable (2008−2009) / 65 nm) | 🛑 Legacy (NetBurst (2000−2006) / 90 nm) |
💎 Value Proposition
| Insight | Mobile Sempron SI-42 | Pentium 4 2.40 |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($0) | ⚠️ Higher cost ($193) |
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 Mobile Sempron SI-42 and Pentium 4 2.40
Mobile Sempron SI-42
The Mobile Sempron SI-42 is manufactured by AMD. It was released in 1 September 2009 (16 years ago). It is based on the Sable (2008−2009) architecture. It features 1 cores and 1 threads. Max frequency: 2.1 GHz. L2 cache: 512 kB. Built on 65 nm process technology. Socket: S1g2. Thermal design power (TDP): 512 kB. Passmark benchmark score: 332 points. Launch price was $69.
Pentium 4 2.40
The Pentium 4 2.40 is manufactured by Intel. It was released in 2007-01-01. It is based on the NetBurst (2000−2006) architecture. It features 1 cores and 1 threads. Max frequency: 2.4 GHz. L3 cache: 0 kB. L2 cache: 1 MB. Built on 90 nm process technology. Socket: PGA478. Thermal design power (TDP): 110 Watt. Memory support: DDR1, DDR2. Passmark benchmark score: 325 points. Launch price was $69.
Processing Power
Both the Mobile Sempron SI-42 and Pentium 4 2.40 share an identical 1-core/1-thread configuration. Boost clocks reach 2.1 GHz on the Mobile Sempron SI-42 versus 2.4 GHz on the Pentium 4 2.40 — a 13.3% clock advantage for the Pentium 4 2.40. The Mobile Sempron SI-42 uses the Sable (2008−2009) architecture (65 nm), while the Pentium 4 2.40 uses NetBurst (2000−2006) (90 nm). In PassMark, the Mobile Sempron SI-42 scores 332 against the Pentium 4 2.40's 325 — a 2.1% lead for the Mobile Sempron SI-42.
| Feature | Mobile Sempron SI-42 | Pentium 4 2.40 |
|---|---|---|
| Cores / Threads | 1 / 1 | 1 / 1 |
| Boost Clock | 2.1 GHz | 2.4 GHz+14% |
| L3 Cache | — | 0 kB |
| L2 Cache | 512 kB | 1 MB+100% |
| Process | 65 nm-28% | 90 nm |
| Architecture | Sable (2008−2009) | NetBurst (2000−2006) |
| PassMark | 332+2% | 325 |
Memory & Platform
The Mobile Sempron SI-42 uses the S1g2 socket (PCIe 2.0), while the Pentium 4 2.40 uses PGA478 (PCIe 1.1) — making them incompatible on the same motherboard.
| Feature | Mobile Sempron SI-42 | Pentium 4 2.40 |
|---|---|---|
| Socket | S1g2 | PGA478 |
| PCIe Generation | PCIe 2.0+82% | PCIe 1.1 |
| Max RAM Speed | — | 400 |
| Max RAM Capacity | — | 4 |
| RAM Channels | — | 1 |
| ECC Support | — | ❌ |
Advanced Features
Virtualization: not specified (Mobile Sempron SI-42) / false (Pentium 4 2.40).
| Feature | Mobile Sempron SI-42 | Pentium 4 2.40 |
|---|---|---|
| Integrated GPU | — | No |
| AVX-512 | — | No |
| Virtualization | — | false |
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