CPU
GPU
Phenom II X2 B55
Celeron E3400
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 Phenom II X2 B55 is positioned at rank 492 and the Celeron E3400 is on rank 727, so the Phenom II X2 B55 offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Phenom II X2 B55
Performance Per Dollar Celeron E3400
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Phenom II X2 B55 | Celeron E3400 |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ✅ More affordable ($0) | ⚠️ Higher cost ($15) |
| Longevity | 🛑 Legacy (Callisto (2009−2010) / 45 nm) | 🛑 Legacy (Wolfdale (2008−2010) / 45 nm) |
💎 Value Proposition
| Insight | Phenom II X2 B55 | Celeron E3400 |
|---|---|---|
| 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 Phenom II X2 B55 and Celeron E3400
Phenom II X2 B55
The Phenom II X2 B55 is manufactured by AMD. It was released in 1 October 2009 (16 years ago). It is based on the Callisto (2009−2010) architecture. It features 2 cores and 2 threads. Base frequency is 3 GHz, with boost up to 3 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: 1,222 points. Launch price was $48.
Celeron E3400
The Celeron E3400 is manufactured by Intel. It was released in 17 January 2010 (15 years ago). It is based on the Wolfdale (2008−2010) architecture. It features 2 cores and 2 threads. Base frequency is 2.6 GHz, with boost up to 2.6 GHz. L3 cache: 0 kB. L2 cache: 1 MB (total). Built on 45 nm process technology. Socket: LGA775. Thermal design power (TDP): 65 Watt. Memory support: DDR1, DDR2, DDR3. Passmark benchmark score: 1,220 points. Launch price was $76.
Processing Power
Both the Phenom II X2 B55 and Celeron E3400 share an identical 2-core/2-thread configuration. Boost clocks reach 3 GHz on the Phenom II X2 B55 versus 2.6 GHz on the Celeron E3400 — a 14.3% clock advantage for the Phenom II X2 B55 (base: 3 GHz vs 2.6 GHz). The Phenom II X2 B55 uses the Callisto (2009−2010) architecture (45 nm), while the Celeron E3400 uses Wolfdale (2008−2010) (45 nm). In PassMark, the Phenom II X2 B55 scores 1,222 against the Celeron E3400's 1,220 — a 0.2% lead for the Phenom II X2 B55. L3 cache: 6 MB (total) on the Phenom II X2 B55 vs 0 kB on the Celeron E3400.
| Feature | Phenom II X2 B55 | Celeron E3400 |
|---|---|---|
| Cores / Threads | 2 / 2 | 2 / 2 |
| Boost Clock | 3 GHz+15% | 2.6 GHz |
| Base Clock | 3 GHz+15% | 2.6 GHz |
| L3 Cache | 6 MB (total) | 0 kB |
| L2 Cache | 512 kB (per core) | 1 MB (total)+100% |
| Process | 45 nm | 45 nm |
| Architecture | Callisto (2009−2010) | Wolfdale (2008−2010) |
| PassMark | 1,222 | 1,220 |
| Geekbench 6 Single | — | 347 |
| Geekbench 6 Multi | — | 624 |
Memory & Platform
The Phenom II X2 B55 uses the AM3 socket (PCIe 2.0), while the Celeron E3400 uses LGA775 (PCIe 1.1) — making them incompatible on the same motherboard.
| Feature | Phenom II X2 B55 | Celeron E3400 |
|---|---|---|
| Socket | AM3 | LGA775 |
| PCIe Generation | PCIe 2.0+82% | PCIe 1.1 |
| Max RAM Speed | — | 1066 |
| Max RAM Capacity | — | 8 |
| RAM Channels | — | 2 |
| ECC Support | — | ❌ |
| PCIe Lanes | — | 0 |
Advanced Features
Virtualization: not specified (Phenom II X2 B55) / true (Celeron E3400). Primary use case: Celeron E3400 targets Budget. Direct competitor: Celeron E3400 rivals Pentium E5200.
| Feature | Phenom II X2 B55 | Celeron E3400 |
|---|---|---|
| Integrated GPU | — | No |
| Unlocked | — | No |
| AVX-512 | — | No |
| Virtualization | — | true |
| Target Use | — | Budget |
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