Sempron 3000+ vs Atom N455
Sempron 3000+
Atom N455
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 Sempron 3000+ is positioned at rank 971 and the Atom N455 is on rank 633, so the Atom N455 offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Sempron 3000+
Performance Per Dollar Atom N455
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Sempron 3000+ | Atom N455 |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | Equivalent pricing | Equivalent pricing |
| Longevity | 🛑 Legacy (Palermo (2001−2005) / 130 nm) | 🛑 Legacy (Pinetrail (2009−2011) / 45 nm) |
💎 Value Proposition
| Insight | Sempron 3000+ | Atom N455 |
|---|---|---|
| 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 Sempron 3000+ and Atom N455
Sempron 3000+
The Sempron 3000+ is manufactured by AMD. It was released in 1 October 2005 (20 years ago). It is based on the Palermo (2001−2005) architecture. It features 1 cores and 1 threads. Max frequency: 1.8 GHz. L3 cache: 0 kB. L2 cache: 128 kB. Built on 130 nm process technology. Socket: 939. Thermal design power (TDP): 62 Watt. Memory support: DDR1. Passmark benchmark score: 350 points. Launch price was $50.
Atom N455
The Atom N455 is manufactured by Intel. It was released in 1 June 2010 (15 years ago). It is based on the Pinetrail (2009−2011) architecture. It features 1 cores and 2 threads. Base frequency is 1.66 GHz, with boost up to 1.67 GHz. L3 cache: 0 kB. L2 cache: 512K (per core). Built on 45 nm process technology. Socket: FCBGA559. Thermal design power (TDP): 6.5 Watt. Memory support: DDR3. Passmark benchmark score: 345 points. Launch price was $64.
Processing Power
The Sempron 3000+ packs 1 cores / 1 threads, matching the Atom N455's 1 cores. Boost clocks reach 1.8 GHz on the Sempron 3000+ versus 1.67 GHz on the Atom N455 — a 7.5% clock advantage for the Sempron 3000+. The Sempron 3000+ uses the Palermo (2001−2005) architecture (130 nm), while the Atom N455 uses Pinetrail (2009−2011) (45 nm). In PassMark, the Sempron 3000+ scores 350 against the Atom N455's 345 — a 1.4% lead for the Sempron 3000+. Both processors carry 0 kB of L3 cache.
| Feature | Sempron 3000+ | Atom N455 |
|---|---|---|
| Cores / Threads | 1 / 1 | 1 / 2 |
| Boost Clock | 1.8 GHz+8% | 1.67 GHz |
| Base Clock | — | 1.66 GHz |
| L3 Cache | 0 kB | 0 kB |
| L2 Cache | 128 kB | 512K (per core)+300% |
| Process | 130 nm | 45 nm-65% |
| Architecture | Palermo (2001−2005) | Pinetrail (2009−2011) |
| PassMark | 350+1% | 345 |
Memory & Platform
The Sempron 3000+ uses the 939 socket (PCIe 2.0), while the Atom N455 uses FCBGA559 (PCIe 2.0) — making them incompatible on the same motherboard.
| Feature | Sempron 3000+ | Atom N455 |
|---|---|---|
| Socket | 939 | FCBGA559 |
| PCIe Generation | PCIe 2.0 | PCIe 2.0 |
| Max RAM Speed | — | DDR3-667 |
| Max RAM Capacity | — | 2 GB |
| RAM Channels | — | 1 |
| ECC Support | — | ❌ |
| PCIe Lanes | — | 0 |
Advanced Features
The Atom N455 includes integrated graphics (Intel GMA 3150), while the Sempron 3000+ requires a dedicated GPU.
| Feature | Sempron 3000+ | Atom N455 |
|---|---|---|
| Integrated GPU | — | Yes |
| IGPU Model | — | Intel GMA 3150 |
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