Atom D2550 vs Celeron B820
Atom D2550
Celeron B820
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 D2550 is positioned at rank 721 and the Celeron B820 is on rank 1109, 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 Atom D2550
Performance Per Dollar Celeron B820
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Atom D2550 | Celeron B820 |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ✅ More affordable ($0) | ⚠️ Higher cost ($15) |
| Longevity | 🛑 Legacy (Cedarview (2011−2012) / 32 nm) | 🛑 Legacy (Sandy Bridge (2011−2013) / 32 nm) |
💎 Value Proposition
| Insight | Atom D2550 | Celeron B820 |
|---|---|---|
| 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 D2550 and Celeron B820
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.
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.
Processing Power
The Atom D2550 packs 2 cores / 4 threads, matching the Celeron B820's 2 cores. Boost clocks reach 1.87 GHz on the Atom D2550 versus 1.7 GHz on the Celeron B820 — a 9.5% clock advantage for the Atom D2550 (base: 1.86 GHz vs 1.7 GHz). The Atom D2550 uses the Cedarview (2011−2012) architecture (32 nm), while the Celeron B820 uses Sandy Bridge (2011−2013) (32 nm). In PassMark, the Atom D2550 scores 715 against the Celeron B820's 765 — a 6.8% lead for the Celeron B820. L3 cache: 0 kB on the Atom D2550 vs 2 MB (total) on the Celeron B820.
| Feature | Atom D2550 | Celeron B820 |
|---|---|---|
| Cores / Threads | 2 / 4 | 2 / 2 |
| Boost Clock | 1.87 GHz+10% | 1.7 GHz |
| Base Clock | 1.86 GHz+9% | 1.7 GHz |
| L3 Cache | 0 kB | 2 MB (total) |
| L2 Cache | 512K (per core)+100% | 256K (per core) |
| Process | 32 nm | 32 nm |
| Architecture | Cedarview (2011−2012) | Sandy Bridge (2011−2013) |
| PassMark | 715 | 765+7% |
Memory & Platform
The Atom D2550 uses the FCBGA559 socket (PCIe 2.0), while the Celeron B820 uses PGA988 (PCIe 2.0) — making them incompatible on the same motherboard. Both support up to DDR3-1066 memory speed. The Celeron B820 supports up to 16 GB of RAM compared to 4 GB — 120% more capacity for professional workloads. Memory channels: 1 (Atom D2550) vs 2 (Celeron B820). PCIe lanes: 4 (Atom D2550) vs 16 (Celeron B820) — the Celeron B820 offers 12 more lanes for additional GPUs or NVMe drives. Chipset compatibility: Intel FCBGA559 (Atom D2550) and HM65,HM67,QM67,QM77 (Celeron B820).
| Feature | Atom D2550 | Celeron B820 |
|---|---|---|
| Socket | FCBGA559 | PGA988 |
| PCIe Generation | PCIe 2.0 | PCIe 2.0 |
| Max RAM Speed | DDR3-1066 | DDR3-1333 |
| Max RAM Capacity | 4 GB | 16 GB+300% |
| RAM Channels | 1 | 2+100% |
| ECC Support | ❌ | ❌ |
| PCIe Lanes | 4 | 16+300% |
Advanced Features
Virtualization: not specified (Atom D2550) / VT-x (Celeron B820). Both include integrated graphics — Intel GMA 3650 (Atom D2550) and HD Graphics (Sandy Bridge) (Celeron B820) — 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 | Atom D2550 | Celeron B820 |
|---|---|---|
| Integrated GPU | Yes | Yes |
| IGPU Model | Intel GMA 3650 | HD Graphics (Sandy Bridge) |
| Unlocked | — | No |
| AVX-512 | — | No |
| Virtualization | — | VT-x |
| Target Use | — | Budget |
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