CPU
GPU
Athlon II X2 255
Phenom X3 8650
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 Athlon II X2 255 is positioned at rank 793 and the Phenom X3 8650 is on rank 496, so the Phenom X3 8650 offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Athlon II X2 255
Performance Per Dollar Phenom X3 8650
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Athlon II X2 255 | Phenom X3 8650 |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ⚠️ Higher cost ($10) | ✅ More affordable ($0) |
| Longevity | 🛑 Legacy (Regor (2009−2013) / 45 nm) | 🛑 Legacy (Toliman (2008) / 65 nm) |
💎 Value Proposition
| Insight | Athlon II X2 255 | Phenom X3 8650 |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ⚠️ Higher cost ($10) | ✅ 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 Athlon II X2 255 and Phenom X3 8650
Athlon II X2 255
The Athlon II X2 255 is manufactured by AMD. It was released in 25 January 2010 (15 years ago). It is based on the Regor (2009−2013) architecture. It features 2 cores and 2 threads. Base frequency is 3.1 GHz, with boost up to 3.1 GHz. L3 cache: 0 kB. L2 cache: 1 MB. Built on 45 nm process technology. Socket: AM3. Thermal design power (TDP): 65 Watt. Memory support: DDR3. Passmark benchmark score: 1,210 points. Launch price was $60.
Phenom X3 8650
The Phenom X3 8650 is manufactured by AMD. It was released in 2009-01-01. It is based on the Toliman (2008) architecture. It features 3 cores and 3 threads. Max frequency: 2.3 GHz. L3 cache: 2 MB (total). L2 cache: 512 kB (per core). Built on 65 nm process technology. Socket: AM2+. Thermal design power (TDP): 95 Watt. Passmark benchmark score: 1,218 points. Launch price was $149.
Processing Power
The Athlon II X2 255 packs 2 cores / 2 threads, while the Phenom X3 8650 offers 3 cores / 3 threads — the Phenom X3 8650 has 1 more core. Boost clocks reach 3.1 GHz on the Athlon II X2 255 versus 2.3 GHz on the Phenom X3 8650 — a 29.6% clock advantage for the Athlon II X2 255. The Athlon II X2 255 uses the Regor (2009−2013) architecture (45 nm), while the Phenom X3 8650 uses Toliman (2008) (65 nm). In PassMark, the Athlon II X2 255 scores 1,210 against the Phenom X3 8650's 1,218 — a 0.7% lead for the Phenom X3 8650. L3 cache: 0 kB on the Athlon II X2 255 vs 2 MB (total) on the Phenom X3 8650.
| Feature | Athlon II X2 255 | Phenom X3 8650 |
|---|---|---|
| Cores / Threads | 2 / 2 | 3 / 3+50% |
| Boost Clock | 3.1 GHz+35% | 2.3 GHz |
| Base Clock | 3.1 GHz | — |
| L3 Cache | 0 kB | 2 MB (total) |
| L2 Cache | 1 MB+100% | 512 kB (per core) |
| Process | 45 nm-31% | 65 nm |
| Architecture | Regor (2009−2013) | Toliman (2008) |
| PassMark | 1,210 | 1,218 |
| Geekbench 6 Single | 265 | — |
| Geekbench 6 Multi | 500 | — |
Memory & Platform
The Athlon II X2 255 uses the AM3 socket (PCIe 2.0), while the Phenom X3 8650 uses AM2+ (PCIe 2.0) — making them incompatible on the same motherboard.
| Feature | Athlon II X2 255 | Phenom X3 8650 |
|---|---|---|
| Socket | AM3 | AM2+ |
| 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 | 0 | — |
Advanced Features
Virtualization: AMD-V (Athlon II X2 255) / not specified (Phenom X3 8650). Primary use case: Athlon II X2 255 targets Legacy Desktop. Direct competitor: Athlon II X2 255 rivals Pentium E5700.
| Feature | Athlon II X2 255 | Phenom X3 8650 |
|---|---|---|
| Integrated GPU | No | — |
| Unlocked | No | — |
| AVX-512 | No | — |
| Virtualization | AMD-V | — |
| Target Use | Legacy Desktop | — |
Top Performing CPUs
The most powerful cpus ranked by PassMark CPU Mark benchmark scores.
You May Also Compare
Similar CPU comparisons based on Athlon II X2 255 and Phenom X3 8650
