Atom N550 vs Celeron G555
Atom N550
Celeron G555
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 N550 is positioned at rank 618 and the Celeron G555 is on rank 634, 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 Atom N550
Performance Per Dollar Celeron G555
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Atom N550 | Celeron G555 |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ✅ More affordable ($0) | ⚠️ Higher cost ($15) |
| Longevity | 🛑 Legacy (Pineview (2009−2011) / 45 nm) | 🛑 Legacy (Sandy Bridge (2011−2013) / 32 nm) |
💎 Value Proposition
| Insight | Atom N550 | Celeron G555 |
|---|---|---|
| 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 N550 and Celeron G555
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.
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.
Processing Power
The Atom N550 packs 2 cores / 4 threads, matching the Celeron G555's 2 cores. Boost clocks reach 1.5 GHz on the Atom N550 versus 2.7 GHz on the Celeron G555 — a 57.1% clock advantage for the Celeron G555 (base: 1.5 GHz vs 2.7 GHz). The Atom N550 uses the Pineview (2009−2011) architecture (45 nm), while the Celeron G555 uses Sandy Bridge (2011−2013) (32 nm). In PassMark, the Atom N550 scores 1,435 against the Celeron G555's 1,427 — a 0.6% lead for the Atom N550. L3 cache: 0 kB on the Atom N550 vs 2 MB (total) on the Celeron G555.
| Feature | Atom N550 | Celeron G555 |
|---|---|---|
| Cores / Threads | 2 / 4 | 2 / 2 |
| Boost Clock | 1.5 GHz | 2.7 GHz+80% |
| Base Clock | 1.5 GHz | 2.7 GHz+80% |
| L3 Cache | 0 kB | 2 MB (total) |
| L2 Cache | 512K (per core)+100% | 256 kB (per core) |
| Process | 45 nm | 32 nm-29% |
| Architecture | Pineview (2009−2011) | Sandy Bridge (2011−2013) |
| PassMark | 1,435 | 1,427 |
| Geekbench 6 Single | — | 398 |
| Geekbench 6 Multi | — | 742 |
Memory & Platform
The Atom N550 uses the FCBGA559 socket (PCIe 2.0), while the Celeron G555 uses LGA1155 (PCIe 2.0) — making them incompatible on the same motherboard. Both support up to DDR3-667 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: 1 (Atom N550) vs 2 (Celeron G555). PCIe lanes: 0 (Atom N550) vs 16 (Celeron G555) — the Celeron G555 offers 16 more lanes for additional GPUs or NVMe drives. Chipset compatibility: Intel NM10 (Atom N550) and H61,H67,P67,Z68,B75,Z77 (Celeron G555).
| Feature | Atom N550 | Celeron G555 |
|---|---|---|
| Socket | FCBGA559 | LGA1155 |
| PCIe Generation | PCIe 2.0 | PCIe 2.0 |
| Max RAM Speed | DDR3-667 | DDR3-1333 |
| Max RAM Capacity | 2 GB | 32 GB+1500% |
| RAM Channels | 1 | 2+100% |
| ECC Support | ❌ | ❌ |
| PCIe Lanes | 0 | 16 |
Advanced Features
Virtualization: not specified (Atom N550) / VT-x (Celeron G555). Both include integrated graphics — Intel GMA 3150 (Atom N550) and Intel HD Graphics (Sandy Bridge) (Celeron G555) — 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 | Atom N550 | Celeron G555 |
|---|---|---|
| Integrated GPU | Yes | Yes |
| IGPU Model | Intel GMA 3150 | Intel HD Graphics (Sandy Bridge) |
| Unlocked | — | No |
| AVX-512 | — | No |
| Virtualization | — | VT-x |
| Target Use | — | Desktop |
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