CPU
GPU
Phenom II X3 P820
Athlon II X3 420e
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 X3 P820 is positioned at rank 419 and the Athlon II X3 420e is on rank 906, so the Phenom II X3 P820 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 X3 P820
Performance Per Dollar Athlon II X3 420e
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Phenom II X3 P820 | Athlon II X3 420e |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ✅ More affordable ($0) | ⚠️ Higher cost ($15) |
| Longevity | 🛑 Legacy (Champlain (2010−2011) / 45 nm) | 🛑 Legacy (Rana (2009−2011) / 45 nm) |
💎 Value Proposition
| Insight | Phenom II X3 P820 | Athlon II X3 420e |
|---|---|---|
| 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 X3 P820 and Athlon II X3 420e
Phenom II X3 P820
The Phenom II X3 P820 is manufactured by AMD. It was released in 2009-01-01. It is based on the Champlain (2010−2011) architecture. It features 3 cores and 3 threads. Max frequency: 1.8 GHz. L2 cache: 1.5 MB. Built on 45 nm process technology. Socket: S1. Thermal design power (TDP): 1.5 MB. Memory support: DDR3. Passmark benchmark score: 1,560 points. Launch price was $149.
Athlon II X3 420e
The Athlon II X3 420e is manufactured by AMD. It was released in 21 September 2010 (15 years ago). It is based on the Rana (2009−2011) architecture. It features 3 cores and 3 threads. Base frequency is 2.6 GHz, with boost up to 2.6 GHz. L3 cache: 0 kB. L2 cache: 512 kB (per core). Built on 45 nm process technology. Socket: AM3. Thermal design power (TDP): 45 Watt. Memory support: DDR3. Passmark benchmark score: 1,557 points. Launch price was $116.
Processing Power
Both the Phenom II X3 P820 and Athlon II X3 420e share an identical 3-core/3-thread configuration. Boost clocks reach 1.8 GHz on the Phenom II X3 P820 versus 2.6 GHz on the Athlon II X3 420e — a 36.4% clock advantage for the Athlon II X3 420e. The Phenom II X3 P820 uses the Champlain (2010−2011) architecture (45 nm), while the Athlon II X3 420e uses Rana (2009−2011) (45 nm). In PassMark, the Phenom II X3 P820 scores 1,560 against the Athlon II X3 420e's 1,557 — a 0.2% lead for the Phenom II X3 P820.
| Feature | Phenom II X3 P820 | Athlon II X3 420e |
|---|---|---|
| Cores / Threads | 3 / 3 | 3 / 3 |
| Boost Clock | 1.8 GHz | 2.6 GHz+44% |
| Base Clock | — | 2.6 GHz |
| L3 Cache | — | 0 kB |
| L2 Cache | 1.5 MB+200% | 512 kB (per core) |
| Process | 45 nm | 45 nm |
| Architecture | Champlain (2010−2011) | Rana (2009−2011) |
| PassMark | 1,560 | 1,557 |
| Geekbench 6 Single | — | 314 |
| Geekbench 6 Multi | — | 880 |
Memory & Platform
The Phenom II X3 P820 uses the S1 socket (PCIe 2.0), while the Athlon II X3 420e uses AM3 (PCIe 2.0) — making them incompatible on the same motherboard.
| Feature | Phenom II X3 P820 | Athlon II X3 420e |
|---|---|---|
| Socket | S1 | AM3 |
| PCIe Generation | PCIe 2.0 | PCIe 2.0 |
| Max RAM Speed | — | DDR3-1333 |
| Max RAM Capacity | — | 16 GB |
| RAM Channels | — | 2 |
| ECC Support | — | ❌ |
| PCIe Lanes | — | 16 |
Advanced Features
Virtualization: not specified (Phenom II X3 P820) / AMD-V (Athlon II X3 420e). Primary use case: Athlon II X3 420e targets Legacy Desktop. Direct competitor: Athlon II X3 420e rivals Athlon II X3 415e.
| Feature | Phenom II X3 P820 | Athlon II X3 420e |
|---|---|---|
| Integrated GPU | — | No |
| Unlocked | — | No |
| AVX-512 | — | No |
| Virtualization | — | AMD-V |
| Target Use | — | Legacy Desktop |
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The most powerful cpus ranked by PassMark CPU Mark benchmark scores.
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