
Atom E680 vs Mobile Sempron SI-40

Atom E680

Mobile Sempron SI-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 Atom E680 is positioned at rank 952 and the Mobile Sempron SI-40 is on rank 1182, so the Atom E680 offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Atom E680
Performance Per Dollar Mobile Sempron SI-40
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Atom E680 | Mobile Sempron SI-40 |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | Equivalent pricing | Equivalent pricing |
| Longevity | 🛑 Legacy (Tunnel Creek (2010) / 45 nm) | 🛑 Legacy (Sable (2008−2009) / 65 nm) |
💎 Value Proposition
| Insight | Atom E680 | Mobile Sempron SI-40 |
|---|---|---|
| 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 E680 and Mobile Sempron SI-40

Atom E680
The Atom E680 is manufactured by Intel. It was released in 14 September 2010 (15 years ago). It is based on the Tunnel Creek (2010) architecture. It features 1 cores and 2 threads. Max frequency: 1.6 GHz. L3 cache: 0 kB. L2 cache: 512 kB (per core). Built on 45 nm process technology. Socket: BGA676. Thermal design power (TDP): 4 Watt. Memory support: DDR2. Passmark benchmark score: 325 points. Launch price was $69.

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.
Processing Power
The Atom E680 packs 1 cores / 2 threads, matching the Mobile Sempron SI-40's 1 cores. Boost clocks reach 1.6 GHz on the Atom E680 versus 2 GHz on the Mobile Sempron SI-40 — a 22.2% clock advantage for the Mobile Sempron SI-40. The Atom E680 uses the Tunnel Creek (2010) architecture (45 nm), while the Mobile Sempron SI-40 uses Sable (2008−2009) (65 nm). In PassMark, the Atom E680 scores 325 against the Mobile Sempron SI-40's 322 — a 0.9% lead for the Atom E680.
| Feature | Atom E680 | Mobile Sempron SI-40 |
|---|---|---|
| Cores / Threads | 1 / 2 | 1 / 1 |
| Boost Clock | 1.6 GHz | 2 GHz+25% |
| L3 Cache | 0 kB | — |
| L2 Cache | 512 kB (per core) | 512 kB |
| Process | 45 nm-31% | 65 nm |
| Architecture | Tunnel Creek (2010) | Sable (2008−2009) |
| PassMark | 325 | 322 |
Memory & Platform
The Atom E680 uses the BGA676 socket (PCIe 2.0), while the Mobile Sempron SI-40 uses S1g2 (PCIe 2.0) — making them incompatible on the same motherboard.
| Feature | Atom E680 | Mobile Sempron SI-40 |
|---|---|---|
| Socket | BGA676 | S1g2 |
| PCIe Generation | PCIe 2.0 | PCIe 2.0 |
| Max RAM Speed | DDR2-800 | — |
| Max RAM Capacity | 2 GB | — |
| RAM Channels | 1 | — |
| ECC Support | ❌ | — |
| PCIe Lanes | 4 | — |
Advanced Features
The Atom E680 includes integrated graphics (Intel GMA 600), while the Mobile Sempron SI-40 requires a dedicated GPU.
| Feature | Atom E680 | Mobile Sempron SI-40 |
|---|---|---|
| Integrated GPU | Yes | — |
| IGPU Model | Intel GMA 600 | — |
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