Celeron G555 vs Atom N550
Celeron G555
Atom N550
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 Celeron G555 is positioned at rank 634 and the Atom N550 is on rank 618, so the Atom N550 offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Celeron G555
Performance Per Dollar Atom N550
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Celeron G555 | Atom N550 |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ⚠️ Higher cost ($15) | ✅ More affordable ($0) |
| Longevity | 🛑 Legacy (Sandy Bridge (2011−2013) / 32 nm) | 🛑 Legacy (Pineview (2009−2011) / 45 nm) |
💎 Value Proposition
| Insight | Celeron G555 | Atom N550 |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ⚠️ Higher cost ($15) | ✅ More affordable ($0) |
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 Celeron G555 and Atom N550
Celeron G555
The Celeron G555 is manufactured by Intel. It was released in 1 September 2012 (13 years ago). It is based on the Sandy Bridge (2011−2013) architecture. It features 2 cores and 2 threads. Base frequency is 2.7 GHz, with boost up to 2.7 GHz. L3 cache: 2 MB (total). L2 cache: 256 kB (per core). Built on 32 nm process technology. Socket: LGA1155. Thermal design power (TDP): 65 Watt. Memory support: DDR3. Passmark benchmark score: 1,427 points. Launch price was $89.
Atom N550
The Atom N550 is manufactured by Intel. It was released in 23 August 2010 (15 years ago). It is based on the Pineview (2009−2011) architecture. It features 2 cores and 4 threads. Base frequency is 1.5 GHz, with boost up to 1.5 GHz. L3 cache: 0 kB. L2 cache: 512K (per core). Built on 45 nm process technology. Socket: FCBGA559. Thermal design power (TDP): 8.5 Watt. Memory support: DDR3. Passmark benchmark score: 1,435 points. Launch price was $86.
Processing Power
The Celeron G555 packs 2 cores / 2 threads, matching the Atom N550's 2 cores. Boost clocks reach 2.7 GHz on the Celeron G555 versus 1.5 GHz on the Atom N550 — a 57.1% clock advantage for the Celeron G555 (base: 2.7 GHz vs 1.5 GHz). The Celeron G555 uses the Sandy Bridge (2011−2013) architecture (32 nm), while the Atom N550 uses Pineview (2009−2011) (45 nm). In PassMark, the Celeron G555 scores 1,427 against the Atom N550's 1,435 — a 0.6% lead for the Atom N550. L3 cache: 2 MB (total) on the Celeron G555 vs 0 kB on the Atom N550.
| Feature | Celeron G555 | Atom N550 |
|---|---|---|
| Cores / Threads | 2 / 2 | 2 / 4 |
| Boost Clock | 2.7 GHz+80% | 1.5 GHz |
| Base Clock | 2.7 GHz+80% | 1.5 GHz |
| L3 Cache | 2 MB (total) | 0 kB |
| L2 Cache | 256 kB (per core) | 512K (per core)+100% |
| Process | 32 nm-29% | 45 nm |
| Architecture | Sandy Bridge (2011−2013) | Pineview (2009−2011) |
| PassMark | 1,427 | 1,435 |
| Geekbench 6 Single | 398 | — |
| Geekbench 6 Multi | 742 | — |
Memory & Platform
The Celeron G555 uses the LGA1155 socket (PCIe 2.0), while the Atom N550 uses FCBGA559 (PCIe 2.0) — making them incompatible on the same motherboard. Both support up to DDR3-1333 memory speed. The Celeron G555 supports up to 32 GB of RAM compared to 2 GB — 176.5% more capacity for professional workloads. Memory channels: 2 (Celeron G555) vs 1 (Atom N550). PCIe lanes: 16 (Celeron G555) vs 0 (Atom N550) — the Celeron G555 offers 16 more lanes for additional GPUs or NVMe drives. Chipset compatibility: H61,H67,P67,Z68,B75,Z77 (Celeron G555) and Intel NM10 (Atom N550).
| Feature | Celeron G555 | Atom N550 |
|---|---|---|
| Socket | LGA1155 | FCBGA559 |
| PCIe Generation | PCIe 2.0 | PCIe 2.0 |
| Max RAM Speed | DDR3-1333 | DDR3-667 |
| Max RAM Capacity | 32 GB+1500% | 2 GB |
| RAM Channels | 2+100% | 1 |
| ECC Support | ❌ | ❌ |
| PCIe Lanes | 16 | 0 |
Advanced Features
Virtualization: VT-x (Celeron G555) / not specified (Atom N550). Both include integrated graphics — Intel HD Graphics (Sandy Bridge) (Celeron G555) and Intel GMA 3150 (Atom N550) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Primary use case: Celeron G555 targets Desktop. Direct competitor: Celeron G555 rivals Pentium G630.
| Feature | Celeron G555 | Atom N550 |
|---|---|---|
| Integrated GPU | Yes | Yes |
| IGPU Model | Intel HD Graphics (Sandy Bridge) | Intel GMA 3150 |
| Unlocked | No | — |
| AVX-512 | No | — |
| Virtualization | VT-x | — |
| Target Use | Desktop | — |
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