Ryzen 5 5600X vs Phenom II X4 820
Ryzen 5 5600X
Phenom II X4 820
Popular choices:
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 5 5600X
Performance Per Dollar Phenom II X4 820
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Ryzen 5 5600X | Phenom II X4 820 |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ⚠️ Higher cost ($135) | ✅ More affordable ($50) |
| Longevity | ✨ Modern (Vermeer (Zen 3) (2020−2022) / 7 nm, 12 nm) | 🛑 Legacy (Deneb (2009−2011) / 45 nm) |
💎 Value Proposition
| Insight | Ryzen 5 5600X | Phenom II X4 820 |
|---|---|---|
| Cost Efficiency | ✅ Better overall value (+283%) | ❌ Lower cost efficiency |
| Upfront Cost | ⚠️ Higher cost ($135) | ✅ More affordable ($50) |
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 5 5600X and Phenom II X4 820
Ryzen 5 5600X
The Ryzen 5 5600X 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 6 cores and 12 threads. Base frequency is 3.7 GHz, with boost up to 4.6 GHz. L3 cache: 32 MB. L2 cache: 512K (per core). Built on 7 nm, 12 nm process technology. Socket: AM4. Thermal design power (TDP): 65 Watt. Memory support: DDR4. Passmark benchmark score: 21,845 points. Launch price was $299.
Phenom II X4 820
The Phenom II X4 820 is manufactured by AMD. It was released in 1 September 2009 (16 years ago). It is based on the Deneb (2009−2011) architecture. It features 4 cores and 4 threads. Base frequency is 2.8 GHz, with boost up to 2.8 GHz. L3 cache: 4 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: 2,114 points. Launch price was $90.
Processing Power
The Ryzen 5 5600X packs 6 cores / 12 threads, while the Phenom II X4 820 offers 4 cores / 4 threads — the Ryzen 5 5600X has 2 more cores. Boost clocks reach 4.6 GHz on the Ryzen 5 5600X versus 2.8 GHz on the Phenom II X4 820 — a 48.6% clock advantage for the Ryzen 5 5600X (base: 3.7 GHz vs 2.8 GHz). The Ryzen 5 5600X uses the Vermeer (Zen 3) (2020−2022) architecture (7 nm, 12 nm), while the Phenom II X4 820 uses Deneb (2009−2011) (45 nm). In PassMark, the Ryzen 5 5600X scores 21,845 against the Phenom II X4 820's 2,114 — a 164.7% lead for the Ryzen 5 5600X. L3 cache: 32 MB on the Ryzen 5 5600X vs 4 MB (total) on the Phenom II X4 820.
| Feature | Ryzen 5 5600X | Phenom II X4 820 |
|---|---|---|
| Cores / Threads | 6 / 12+50% | 4 / 4 |
| Boost Clock | 4.6 GHz+64% | 2.8 GHz |
| Base Clock | 3.7 GHz+32% | 2.8 GHz |
| L3 Cache | 32 MB+700% | 4 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 | 21,845+933% | 2,114 |
Memory & Platform
The Ryzen 5 5600X uses the AM4 socket (PCIe 4.0), while the Phenom II X4 820 uses AM3 (PCIe 2.0) — making them incompatible on the same motherboard.
| Feature | Ryzen 5 5600X | Phenom II X4 820 |
|---|---|---|
| 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 5 5600X) / not specified (Phenom II X4 820). Primary use case: Ryzen 5 5600X targets Desktop.
| Feature | Ryzen 5 5600X | Phenom II X4 820 |
|---|---|---|
| Integrated GPU | No | — |
| Unlocked | Yes | — |
| AVX-512 | No | — |
| Virtualization | AMD-V | — |
| Target Use | Desktop | — |
Value Analysis
The Ryzen 5 5600X launched at $299 MSRP, while the Phenom II X4 820 debuted at $150. At current prices ($135 vs $50), the Phenom II X4 820 is $85 cheaper. In terms of value (PassMark points per dollar), the Ryzen 5 5600X delivers 161.8 pts/$ vs 42.3 pts/$ for the Phenom II X4 820 — making the Ryzen 5 5600X the 117.1% better value option.
| Feature | Ryzen 5 5600X | Phenom II X4 820 |
|---|---|---|
| MSRP | $299 | $150-50% |
| Avg Price (30d) | $135 | $50-63% |
| Performance per Dollar | 161.8+283% | 42.3 |
| Release Date | 2020 | 2009 |
Top Performing CPUs
The most powerful cpus ranked by PassMark CPU Mark benchmark scores.
You May Also Compare
Similar CPU comparisons based on Ryzen 5 5600X and Phenom II X4 820
