CPU
GPU
Atom Z540
Sempron 2800+
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 Sempron 2800+ is on rank 1073, 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 Sempron 2800+
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Atom Z540 | Sempron 2800+ |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ✅ More affordable ($0) | ⚠️ Higher cost ($29) |
| Longevity | 🛑 Legacy (Silverthorne (2008−2010) / 45 nm) | 🛑 Legacy (Manila (2001−2006) / 130 nm) |
💎 Value Proposition
| Insight | Atom Z540 | Sempron 2800+ |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($0) | ⚠️ Higher cost ($29) |
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 Sempron 2800+
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.
Sempron 2800+
The Sempron 2800+ is manufactured by AMD. It was released in Janeiro 2001 (24 years ago). It is based on the Manila (2001−2006) architecture. It features 1 cores and 1 threads. Max frequency: 2 GHz. L3 cache: 0 kB. L2 cache: 256K. Built on 130 nm process technology. Socket: AM2. Thermal design power (TDP): 62 Watt. Passmark benchmark score: 320 points. Launch price was $104.
Processing Power
The Atom Z540 packs 1 cores / 2 threads, matching the Sempron 2800+'s 1 cores. Boost clocks reach 0.07 GHz on the Atom Z540 versus 2 GHz on the Sempron 2800+ — a 186.5% clock advantage for the Sempron 2800+. The Atom Z540 uses the Silverthorne (2008−2010) architecture (45 nm), while the Sempron 2800+ uses Manila (2001−2006) (130 nm). In PassMark, the Atom Z540 scores 305 against the Sempron 2800+'s 320 — a 4.8% lead for the Sempron 2800+. Both processors carry 0 kB of L3 cache.
| Feature | Atom Z540 | Sempron 2800+ |
|---|---|---|
| Cores / Threads | 1 / 2 | 1 / 1 |
| Boost Clock | 0.07 GHz | 2 GHz+2757% |
| Base Clock | 1.86 GHz | — |
| L3 Cache | 0 kB | 0 kB |
| L2 Cache | 512 kB+100% | 256K |
| Process | 45 nm-65% | 130 nm |
| Architecture | Silverthorne (2008−2010) | Manila (2001−2006) |
| PassMark | 305 | 320+5% |
Memory & Platform
The Atom Z540 uses the PBGA441 socket (PCIe 2.0), while the Sempron 2800+ uses AM2 (PCIe 2.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR2-533 on the Atom Z540 versus DDR-333 on the Sempron 2800+ — the Atom Z540 supports -202.4% faster memory, which can translate to measurable gains in memory-sensitive workloads. Both support up to 2 GB of RAM. Both feature 1-channel memory with ECC support. Both provide 0 PCIe lanes.
| Feature | Atom Z540 | Sempron 2800+ |
|---|---|---|
| Socket | PBGA441 | AM2 |
| PCIe Generation | PCIe 2.0 | PCIe 2.0 |
| Max RAM Speed | DDR2-533 | DDR-333 |
| Max RAM Capacity | 2 GB | 2 GB |
| RAM Channels | 1 | 1 |
| ECC Support | ❌ | ❌ |
| PCIe Lanes | 0 | 0 |
Advanced Features
Virtualization: not specified (Atom Z540) / None (Sempron 2800+). Primary use case: Sempron 2800+ targets Budget.
| Feature | Atom Z540 | Sempron 2800+ |
|---|---|---|
| Integrated GPU | No | No |
| Unlocked | — | No |
| AVX-512 | — | No |
| Virtualization | — | None |
| Target Use | — | Budget |
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