Mobile Sempron SI-40 vs Athlon XP 2400+
Mobile Sempron SI-40
Athlon XP 2400+
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-40 is positioned at rank 1182 and the Athlon XP 2400+ is on rank 1109, so the Athlon XP 2400+ 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-40
Performance Per Dollar Athlon XP 2400+
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Mobile Sempron SI-40 | Athlon XP 2400+ |
|---|---|---|
| Gaming | Balanced gaming performance | Balanced gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ✅ More affordable ($0) | ⚠️ Higher cost ($10) |
| Longevity | 🛑 Legacy (Sable (2008−2009) / 65 nm) | 🛑 Legacy (Thorton (2001−2003) / 130 nm) |
💎 Value Proposition
| Insight | Mobile Sempron SI-40 | Athlon XP 2400+ |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($0) | ⚠️ Higher cost ($10) |
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-40 and Athlon XP 2400+
Mobile Sempron SI-40
The Mobile Sempron SI-40 is manufactured by AMD. It was released in 4 July 2008 (17 years ago). It is based on the Sable (2008−2009) architecture. It features 1 cores and 1 threads. Max frequency: 2 GHz. L2 cache: 512 kB. Built on 65 nm process technology. Socket: S1g2. Thermal design power (TDP): 512 kB. Passmark benchmark score: 322 points. Launch price was $69.
Athlon XP 2400+
The Athlon XP 2400+ is manufactured by AMD. It was released in Agosto 2002 (23 years ago). It is based on the Thorton (2001−2003) architecture. It features 1 cores and 1 threads. Max frequency: 2 GHz. L3 cache: 0 kB. L2 cache: 256 kB. Built on 130 nm process technology. Socket: A. Thermal design power (TDP): 68 Watt. Passmark benchmark score: 305 points. Launch price was $90.
Processing Power
Both the Mobile Sempron SI-40 and Athlon XP 2400+ share an identical 1-core/1-thread configuration. Boost clocks reach 2 GHz on the Mobile Sempron SI-40 versus 2 GHz on the Athlon XP 2400+ — identical boost frequencies. The Mobile Sempron SI-40 uses the Sable (2008−2009) architecture (65 nm), while the Athlon XP 2400+ uses Thorton (2001−2003) (130 nm). In PassMark, the Mobile Sempron SI-40 scores 322 against the Athlon XP 2400+'s 305 — a 5.4% lead for the Mobile Sempron SI-40.
| Feature | Mobile Sempron SI-40 | Athlon XP 2400+ |
|---|---|---|
| Cores / Threads | 1 / 1 | 1 / 1 |
| Boost Clock | 2 GHz | 2 GHz |
| L3 Cache | — | 0 kB |
| L2 Cache | 512 kB+100% | 256 kB |
| Process | 65 nm-50% | 130 nm |
| Architecture | Sable (2008−2009) | Thorton (2001−2003) |
| PassMark | 322+6% | 305 |
Memory & Platform
The Mobile Sempron SI-40 uses the S1g2 socket (PCIe 2.0), while the Athlon XP 2400+ uses A (PCIe 1.1) — making them incompatible on the same motherboard.
| Feature | Mobile Sempron SI-40 | Athlon XP 2400+ |
|---|---|---|
| Socket | S1g2 | A |
| PCIe Generation | PCIe 2.0+82% | PCIe 1.1 |
| Max RAM Speed | — | DDR-266 |
| Max RAM Capacity | — | 4 GB |
| RAM Channels | — | 1 |
| ECC Support | — | ✅ |
| PCIe Lanes | — | 0 |
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