Atom x5-Z8550 vs Phenom II X2 550
Atom x5-Z8550
Phenom II X2 550
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 x5-Z8550 is positioned at rank 723 and the Phenom II X2 550 is on rank 516, so the Phenom II X2 550 offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Atom x5-Z8550
Performance Per Dollar Phenom II X2 550
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Atom x5-Z8550 | Phenom II X2 550 |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | Equivalent pricing | Equivalent pricing |
| Longevity | 🛑 Legacy (Cherry Trail (2015−2016) / 14 nm) | 🛑 Legacy (Callisto (2009−2010) / 45 nm) |
💎 Value Proposition
| Insight | Atom x5-Z8550 | Phenom II X2 550 |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | Equivalent pricing | Equivalent pricing |
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 x5-Z8550 and Phenom II X2 550
Atom x5-Z8550
The Atom x5-Z8550 is manufactured by Intel. It was released in 8 February 2016 (9 years ago). It is based on the Cherry Trail (2015−2016) architecture. It features 4 cores and 4 threads. Base frequency is 1.44 GHz, with boost up to 2.4 GHz. L3 cache: 0 kB. L2 cache: 2 MB. Built on 14 nm process technology. Socket: UTFCBGA1380. Memory support: DDR3. Passmark benchmark score: 1,143 points. Launch price was $69.
Phenom II X2 550
The Phenom II X2 550 is manufactured by AMD. It was released in 4 November 2009 (16 years ago). It is based on the Callisto (2009−2010) architecture. It features 2 cores and 2 threads. Base frequency is 3.1 GHz, with boost up to 3.1 GHz. L3 cache: 6 MB (total). L2 cache: 512 kB (per core). Built on 45 nm process technology. Socket: AM3. Thermal design power (TDP): 80 Watt. Memory support: DDR3. Passmark benchmark score: 1,142 points. Launch price was $133.
Processing Power
The Atom x5-Z8550 packs 4 cores / 4 threads, while the Phenom II X2 550 offers 2 cores / 2 threads — the Atom x5-Z8550 has 2 more cores. Boost clocks reach 2.4 GHz on the Atom x5-Z8550 versus 3.1 GHz on the Phenom II X2 550 — a 25.5% clock advantage for the Phenom II X2 550 (base: 1.44 GHz vs 3.1 GHz). The Atom x5-Z8550 uses the Cherry Trail (2015−2016) architecture (14 nm), while the Phenom II X2 550 uses Callisto (2009−2010) (45 nm). In PassMark, the Atom x5-Z8550 scores 1,143 against the Phenom II X2 550's 1,142 — a 0.1% lead for the Atom x5-Z8550. L3 cache: 0 kB on the Atom x5-Z8550 vs 6 MB (total) on the Phenom II X2 550.
| Feature | Atom x5-Z8550 | Phenom II X2 550 |
|---|---|---|
| Cores / Threads | 4 / 4+100% | 2 / 2 |
| Boost Clock | 2.4 GHz | 3.1 GHz+29% |
| Base Clock | 1.44 GHz | 3.1 GHz+115% |
| L3 Cache | 0 kB | 6 MB (total) |
| L2 Cache | 2 MB+300% | 512 kB (per core) |
| Process | 14 nm-69% | 45 nm |
| Architecture | Cherry Trail (2015−2016) | Callisto (2009−2010) |
| PassMark | 1,143 | 1,142 |
Memory & Platform
The Atom x5-Z8550 uses the UTFCBGA1380 socket (PCIe 3.0), while the Phenom II X2 550 uses AM3 (PCIe 2.0) — making them incompatible on the same motherboard.
| Feature | Atom x5-Z8550 | Phenom II X2 550 |
|---|---|---|
| Socket | UTFCBGA1380 | AM3 |
| PCIe Generation | PCIe 3.0+50% | PCIe 2.0 |
| Max RAM Speed | LPDDR3-1600 | — |
| Max RAM Capacity | 8 GB | — |
| RAM Channels | 2 | — |
| ECC Support | ❌ | — |
| PCIe Lanes | 2 | — |
Advanced Features
The Atom x5-Z8550 includes integrated graphics (Intel HD Graphics (Cherry Trail)), while the Phenom II X2 550 requires a dedicated GPU.
| Feature | Atom x5-Z8550 | Phenom II X2 550 |
|---|---|---|
| Integrated GPU | Yes | — |
| IGPU Model | Intel HD Graphics (Cherry Trail) | — |
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