Celeron B820 vs Atom D2550
Celeron B820
Atom D2550
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 B820 is positioned at rank 1109 and the Atom D2550 is on rank 721, so the Atom D2550 offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Celeron B820
Performance Per Dollar Atom D2550
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Celeron B820 | Atom D2550 |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ⚠️ Higher cost ($15) | ✅ More affordable ($0) |
| Longevity | 🛑 Legacy (Sandy Bridge (2011−2013) / 32 nm) | 🛑 Legacy (Cedarview (2011−2012) / 32 nm) |
💎 Value Proposition
| Insight | Celeron B820 | Atom D2550 |
|---|---|---|
| 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 B820 and Atom D2550
Celeron B820
The Celeron B820 is manufactured by Intel. It was released in 1 July 2012 (13 years ago). It is based on the Sandy Bridge (2011−2013) architecture. It features 2 cores and 2 threads. Base frequency is 1.7 GHz, with boost up to 1.7 GHz. L3 cache: 2 MB (total). L2 cache: 256K (per core). Built on 32 nm process technology. Socket: PGA988. Thermal design power (TDP): 35 Watt. Memory support: DDR3. Passmark benchmark score: 765 points. Launch price was $86.
Atom D2550
The Atom D2550 is manufactured by Intel. It was released in 1 November 2011 (14 years ago). It is based on the Cedarview (2011−2012) architecture. It features 2 cores and 4 threads. Base frequency is 1.86 GHz, with boost up to 1.87 GHz. L3 cache: 0 kB. L2 cache: 512K (per core). Built on 32 nm process technology. Socket: FCBGA559. Thermal design power (TDP): 10 Watt. Memory support: DDR3. Passmark benchmark score: 715 points. Launch price was $69.
Processing Power
The Celeron B820 packs 2 cores / 2 threads, matching the Atom D2550's 2 cores. Boost clocks reach 1.7 GHz on the Celeron B820 versus 1.87 GHz on the Atom D2550 — a 9.5% clock advantage for the Atom D2550 (base: 1.7 GHz vs 1.86 GHz). The Celeron B820 uses the Sandy Bridge (2011−2013) architecture (32 nm), while the Atom D2550 uses Cedarview (2011−2012) (32 nm). In PassMark, the Celeron B820 scores 765 against the Atom D2550's 715 — a 6.8% lead for the Celeron B820. L3 cache: 2 MB (total) on the Celeron B820 vs 0 kB on the Atom D2550.
| Feature | Celeron B820 | Atom D2550 |
|---|---|---|
| Cores / Threads | 2 / 2 | 2 / 4 |
| Boost Clock | 1.7 GHz | 1.87 GHz+10% |
| Base Clock | 1.7 GHz | 1.86 GHz+9% |
| L3 Cache | 2 MB (total) | 0 kB |
| L2 Cache | 256K (per core) | 512K (per core)+100% |
| Process | 32 nm | 32 nm |
| Architecture | Sandy Bridge (2011−2013) | Cedarview (2011−2012) |
| PassMark | 765+7% | 715 |
Memory & Platform
The Celeron B820 uses the PGA988 socket (PCIe 2.0), while the Atom D2550 uses FCBGA559 (PCIe 2.0) — making them incompatible on the same motherboard. Both support up to DDR3-1333 memory speed. The Celeron B820 supports up to 16 GB of RAM compared to 4 GB — 120% more capacity for professional workloads. Memory channels: 2 (Celeron B820) vs 1 (Atom D2550). PCIe lanes: 16 (Celeron B820) vs 4 (Atom D2550) — the Celeron B820 offers 12 more lanes for additional GPUs or NVMe drives. Chipset compatibility: HM65,HM67,QM67,QM77 (Celeron B820) and Intel FCBGA559 (Atom D2550).
| Feature | Celeron B820 | Atom D2550 |
|---|---|---|
| Socket | PGA988 | FCBGA559 |
| PCIe Generation | PCIe 2.0 | PCIe 2.0 |
| Max RAM Speed | DDR3-1333 | DDR3-1066 |
| Max RAM Capacity | 16 GB+300% | 4 GB |
| RAM Channels | 2+100% | 1 |
| ECC Support | ❌ | ❌ |
| PCIe Lanes | 16+300% | 4 |
Advanced Features
Virtualization: VT-x (Celeron B820) / not specified (Atom D2550). Both include integrated graphics — HD Graphics (Sandy Bridge) (Celeron B820) and Intel GMA 3650 (Atom D2550) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Primary use case: Celeron B820 targets Budget. Direct competitor: Celeron B820 rivals Pentium 967.
| Feature | Celeron B820 | Atom D2550 |
|---|---|---|
| Integrated GPU | Yes | Yes |
| IGPU Model | HD Graphics (Sandy Bridge) | Intel GMA 3650 |
| Unlocked | No | — |
| AVX-512 | No | — |
| Virtualization | VT-x | — |
| Target Use | Budget | — |
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