Atom N455 vs Sempron 3100+
Atom N455
Sempron 3100+
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 N455 is positioned at rank 633 and the Sempron 3100+ is on rank 1068, 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 Atom N455
Performance Per Dollar Sempron 3100+
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Atom N455 | Sempron 3100+ |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ✅ More affordable ($0) | ⚠️ Higher cost ($15) |
| Longevity | 🛑 Legacy (Pinetrail (2009−2011) / 45 nm) | 🛑 Legacy (Palermo (2001−2005) / 130 nm) |
💎 Value Proposition
| Insight | Atom N455 | Sempron 3100+ |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($0) | ⚠️ Higher cost ($15) |
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 N455 and Sempron 3100+
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.
Sempron 3100+
The Sempron 3100+ is manufactured by AMD. It was released in Janeiro 2001 (24 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: 256 kB. Built on 130 nm process technology. Socket: 754. Thermal design power (TDP): 62 Watt. Passmark benchmark score: 372 points. Launch price was $60.
Processing Power
The Atom N455 packs 1 cores / 2 threads, matching the Sempron 3100+'s 1 cores. Boost clocks reach 1.67 GHz on the Atom N455 versus 1.8 GHz on the Sempron 3100+ — a 7.5% clock advantage for the Sempron 3100+. The Atom N455 uses the Pinetrail (2009−2011) architecture (45 nm), while the Sempron 3100+ uses Palermo (2001−2005) (130 nm). In PassMark, the Atom N455 scores 345 against the Sempron 3100+'s 372 — a 7.5% lead for the Sempron 3100+. Both processors carry 0 kB of L3 cache.
| Feature | Atom N455 | Sempron 3100+ |
|---|---|---|
| Cores / Threads | 1 / 2 | 1 / 1 |
| Boost Clock | 1.67 GHz | 1.8 GHz+8% |
| Base Clock | 1.66 GHz | — |
| L3 Cache | 0 kB | 0 kB |
| L2 Cache | 512K (per core)+100% | 256 kB |
| Process | 45 nm-65% | 130 nm |
| Architecture | Pinetrail (2009−2011) | Palermo (2001−2005) |
| PassMark | 345 | 372+8% |
Memory & Platform
The Atom N455 uses the FCBGA559 socket (PCIe 2.0), while the Sempron 3100+ uses 754 (PCIe 2.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR3-667 on the Atom N455 versus DDR 400 MHz on the Sempron 3100+ — the Sempron 3100+ supports 197% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Sempron 3100+ supports up to 3 GB of RAM compared to 2 GB — 40% more capacity for professional workloads. Both feature 1-channel memory with ECC support. Both provide 0 PCIe lanes. Chipset compatibility: Intel NM10 (Atom N455) and nForce3,VIA K8T800 (Sempron 3100+).
| Feature | Atom N455 | Sempron 3100+ |
|---|---|---|
| Socket | FCBGA559 | 754 |
| PCIe Generation | PCIe 2.0 | PCIe 2.0 |
| Max RAM Speed | DDR3-667 | DDR 400 MHz+13233% |
| Max RAM Capacity | 2 GB | 3 GB+50% |
| RAM Channels | 1 | 1 |
| ECC Support | ❌ | ❌ |
| PCIe Lanes | 0 | 0 |
Advanced Features
Virtualization: not specified (Atom N455) / false (Sempron 3100+). The Atom N455 includes integrated graphics (Intel GMA 3150), while the Sempron 3100+ requires a dedicated GPU. Primary use case: Sempron 3100+ targets Budget.
| Feature | Atom N455 | Sempron 3100+ |
|---|---|---|
| Integrated GPU | Yes | No |
| IGPU Model | Intel GMA 3150 | — |
| Unlocked | — | No |
| AVX-512 | — | No |
| Virtualization | — | false |
| Target Use | — | Budget |
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