
Atom Z540

Atom E680
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 E680 is on rank 952, 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 E680
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Atom Z540 | Atom E680 |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | Equivalent pricing | Equivalent pricing |
| Longevity | 🛑 Legacy (Silverthorne (2008−2010) / 45 nm) | 🛑 Legacy (Tunnel Creek (2010) / 45 nm) |
💎 Value Proposition
| Insight | Atom Z540 | Atom E680 |
|---|---|---|
| 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 E680

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 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.
Processing Power
Both the Atom Z540 and Atom E680 share an identical 1-core/2-thread configuration. Boost clocks reach 0.07 GHz on the Atom Z540 versus 1.6 GHz on the Atom E680 — a 183.2% clock advantage for the Atom E680. The Atom Z540 uses the Silverthorne (2008−2010) architecture (45 nm), while the Atom E680 uses Tunnel Creek (2010) (45 nm). In PassMark, the Atom Z540 scores 305 against the Atom E680's 325 — a 6.3% lead for the Atom E680. Both processors carry 0 kB of L3 cache.
| Feature | Atom Z540 | Atom E680 |
|---|---|---|
| Cores / Threads | 1 / 2 | 1 / 2 |
| Boost Clock | 0.07 GHz | 1.6 GHz+2186% |
| Base Clock | 1.86 GHz | — |
| L3 Cache | 0 kB | 0 kB |
| L2 Cache | 512 kB | 512 kB (per core) |
| Process | 45 nm | 45 nm |
| Architecture | Silverthorne (2008−2010) | Tunnel Creek (2010) |
| PassMark | 305 | 325+7% |
Memory & Platform
The Atom Z540 uses the PBGA441 socket (PCIe 2.0), while the Atom E680 uses BGA676 (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. PCIe lanes: 0 (Atom Z540) vs 4 (Atom E680) — the Atom E680 offers 4 more lanes for additional GPUs or NVMe drives. Chipset compatibility: Intel US15W (Atom Z540) and Intel FCBGA518 (Atom E680).
| Feature | Atom Z540 | Atom E680 |
|---|---|---|
| Socket | PBGA441 | BGA676 |
| PCIe Generation | PCIe 2.0 | PCIe 2.0 |
| Max RAM Speed | DDR2-533 | DDR2-800 |
| Max RAM Capacity | 2 GB | 2 GB |
| RAM Channels | 1 | 1 |
| ECC Support | ❌ | ❌ |
| PCIe Lanes | 0 | 4 |
Advanced Features
The Atom E680 includes integrated graphics (Intel GMA 600), while the Atom Z540 requires a dedicated GPU.
| Feature | Atom Z540 | Atom E680 |
|---|---|---|
| Integrated GPU | No | Yes |
| IGPU Model | — | Intel GMA 600 |
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