Ryzen 7 5800X vs Phenom II X4 B95
Ryzen 7 5800X
Phenom II X4 B95
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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 7 5800X
Performance Per Dollar Phenom II X4 B95
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Ryzen 7 5800X | Phenom II X4 B95 |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ⚠️ Higher cost ($180) | ✅ More affordable ($0) |
| Longevity | ✨ Modern (Vermeer (Zen 3) (2020−2022) / 7 nm, 12 nm) | 🛑 Legacy (Deneb (2009−2011) / 45 nm) |
💎 Value Proposition
| Insight | Ryzen 7 5800X | Phenom II X4 B95 |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ⚠️ Higher cost ($180) | ✅ 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 7 5800X and Phenom II X4 B95
Ryzen 7 5800X
The Ryzen 7 5800X is manufactured by AMD. It was released in 5 November 2020 (5 years ago). It is based on the Vermeer (Zen 3) (2020−2022) architecture. It features 8 cores and 16 threads. Base frequency is 3.8 GHz, with boost up to 4.7 GHz. L3 cache: 32 MB. L2 cache: 512K (per core). Built on 7 nm, 12 nm process technology. Socket: AM4. Thermal design power (TDP): 105 Watt. Memory support: DDR4. Passmark benchmark score: 27,712 points. Launch price was $449.
Phenom II X4 B95
The Phenom II X4 B95 is manufactured by AMD. It was released in 1 October 2009 (16 years ago). It is based on the Deneb (2009−2011) architecture. It features 4 cores and 4 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): 95 Watt. Memory support: DDR3. Passmark benchmark score: 2,427 points. Launch price was $80.
Processing Power
The Ryzen 7 5800X packs 8 cores / 16 threads, while the Phenom II X4 B95 offers 4 cores / 4 threads — the Ryzen 7 5800X has 4 more cores. Boost clocks reach 4.7 GHz on the Ryzen 7 5800X versus 3 GHz on the Phenom II X4 B95 — a 44.2% clock advantage for the Ryzen 7 5800X (base: 3.8 GHz vs 3 GHz). The Ryzen 7 5800X uses the Vermeer (Zen 3) (2020−2022) architecture (7 nm, 12 nm), while the Phenom II X4 B95 uses Deneb (2009−2011) (45 nm). In PassMark, the Ryzen 7 5800X scores 27,712 against the Phenom II X4 B95's 2,427 — a 167.8% lead for the Ryzen 7 5800X. L3 cache: 32 MB on the Ryzen 7 5800X vs 6 MB (total) on the Phenom II X4 B95.
| Feature | Ryzen 7 5800X | Phenom II X4 B95 |
|---|---|---|
| Cores / Threads | 8 / 16+100% | 4 / 4 |
| Boost Clock | 4.7 GHz+57% | 3 GHz |
| Base Clock | 3.8 GHz+27% | 3 GHz |
| L3 Cache | 32 MB+433% | 6 MB (total) |
| L2 Cache | 512K (per core) | 512 kB (per core) |
| Process | 7 nm, 12 nm-84% | 45 nm |
| Architecture | Vermeer (Zen 3) (2020−2022) | Deneb (2009−2011) |
| PassMark | 27,712+1042% | 2,427 |
Memory & Platform
The Ryzen 7 5800X uses the AM4 socket (PCIe 4.0), while the Phenom II X4 B95 uses AM3 (PCIe 2.0) — making them incompatible on the same motherboard.
| Feature | Ryzen 7 5800X | Phenom II X4 B95 |
|---|---|---|
| Socket | AM4 | AM3 |
| PCIe Generation | PCIe 4.0+100% | PCIe 2.0 |
| Max RAM Speed | DDR4-3200 | — |
| Max RAM Capacity | 128 GB | — |
| RAM Channels | 2 | — |
| ECC Support | ✅ | — |
| PCIe Lanes | 24 | — |
Advanced Features
Virtualization: AMD-V (Ryzen 7 5800X) / not specified (Phenom II X4 B95). Primary use case: Ryzen 7 5800X targets Desktop.
| Feature | Ryzen 7 5800X | Phenom II X4 B95 |
|---|---|---|
| Integrated GPU | No | — |
| Unlocked | Yes | — |
| AVX-512 | No | — |
| Virtualization | AMD-V | — |
| Target Use | Desktop | — |
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