Ryzen 9 7950X3D vs Phenom II X2 B55
Ryzen 9 7950X3D
Phenom II X2 B55
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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.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Ryzen 9 7950X3D
Performance Per Dollar Phenom II X2 B55
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Ryzen 9 7950X3D | Phenom II X2 B55 |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ⚠️ Higher cost ($486) | ✅ More affordable ($0) |
| Longevity | ✨ Modern (Raphael (Zen4) (2022−2023) / 5 nm, 6 nm) | 🛑 Legacy (Callisto (2009−2010) / 45 nm) |
💎 Value Proposition
| Insight | Ryzen 9 7950X3D | Phenom II X2 B55 |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ⚠️ Higher cost ($486) | ✅ 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 Ryzen 9 7950X3D and Phenom II X2 B55
Ryzen 9 7950X3D
The Ryzen 9 7950X3D is manufactured by AMD. It was released in 4 January 2023 (2 years ago). It is based on the Raphael (Zen4) (2022−2023) architecture. It features 16 cores and 32 threads. Base frequency is 4.2 GHz, with boost up to 5.7 GHz. L3 cache: 128 MB (total). L2 cache: 1 MB (per core). Built on 5 nm, 6 nm process technology. Socket: AM5. Thermal design power (TDP): 120 Watt. Memory support: DDR5-5200. Passmark benchmark score: 62,323 points. Launch price was $699.
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.
Processing Power
The Ryzen 9 7950X3D packs 16 cores / 32 threads, while the Phenom II X2 B55 offers 2 cores / 2 threads — the Ryzen 9 7950X3D has 14 more cores. Boost clocks reach 5.7 GHz on the Ryzen 9 7950X3D versus 3 GHz on the Phenom II X2 B55 — a 62.1% clock advantage for the Ryzen 9 7950X3D (base: 4.2 GHz vs 3 GHz). The Ryzen 9 7950X3D uses the Raphael (Zen4) (2022−2023) architecture (5 nm, 6 nm), while the Phenom II X2 B55 uses Callisto (2009−2010) (45 nm). In PassMark, the Ryzen 9 7950X3D scores 62,323 against the Phenom II X2 B55's 1,222 — a 192.3% lead for the Ryzen 9 7950X3D. L3 cache: 128 MB (total) on the Ryzen 9 7950X3D vs 6 MB (total) on the Phenom II X2 B55.
| Feature | Ryzen 9 7950X3D | Phenom II X2 B55 |
|---|---|---|
| Cores / Threads | 16 / 32+700% | 2 / 2 |
| Boost Clock | 5.7 GHz+90% | 3 GHz |
| Base Clock | 4.2 GHz+40% | 3 GHz |
| L3 Cache | 128 MB (total)+2033% | 6 MB (total) |
| L2 Cache | 1 MB (per core)+100% | 512 kB (per core) |
| Process | 5 nm, 6 nm-89% | 45 nm |
| Architecture | Raphael (Zen4) (2022−2023) | Callisto (2009−2010) |
| PassMark | 62,323+5000% | 1,222 |
| Cinebench R23 Multi | 38,581 | — |
| Geekbench 6 Single | 2,926 | — |
| Geekbench 6 Multi | 19,643 | — |
Memory & Platform
The Ryzen 9 7950X3D uses the AM5 socket (PCIe 5.0), while the Phenom II X2 B55 uses AM3 (PCIe 2.0) — making them incompatible on the same motherboard.
| Feature | Ryzen 9 7950X3D | Phenom II X2 B55 |
|---|---|---|
| Socket | AM5 | AM3 |
| PCIe Generation | PCIe 5.0+150% | PCIe 2.0 |
| Max RAM Speed | DDR5-5200 | — |
| Max RAM Capacity | 128 GB | — |
| RAM Channels | 2 | — |
| ECC Support | ✅ | — |
| PCIe Lanes | 28 | — |
Advanced Features
Virtualization: true (Ryzen 9 7950X3D) / not specified (Phenom II X2 B55). The Ryzen 9 7950X3D includes integrated graphics (Radeon Graphics), while the Phenom II X2 B55 requires a dedicated GPU. Direct competitor: Ryzen 9 7950X3D rivals Core i9-13900K.
| Feature | Ryzen 9 7950X3D | Phenom II X2 B55 |
|---|---|---|
| Integrated GPU | Yes | — |
| IGPU Model | Radeon Graphics | — |
| Unlocked | Yes | — |
| AVX-512 | Yes | — |
| Virtualization | true | — |
Top Performing CPUs
The most powerful cpus ranked by PassMark CPU Mark benchmark scores.
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