CPU
GPU
Athlon II X3 455
Xeon X6550
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 X3 455 is positioned at rank 750 and the Xeon X6550 is on rank 879, so the Athlon II X3 455 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 X3 455
Performance Per Dollar Xeon X6550
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Athlon II X3 455 | Xeon X6550 |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ⚠️ Higher cost ($15) | ✅ More affordable ($0) |
| Longevity | 🛑 Legacy (Rana (2009−2011) / 45 nm) | 🛑 Legacy (Legacy / 45 nm) |
💎 Value Proposition
| Insight | Athlon II X3 455 | Xeon X6550 |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ⚠️ Higher cost ($15) | ✅ 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 X3 455 and Xeon X6550
Athlon II X3 455
The Athlon II X3 455 is manufactured by AMD. It was released in 7 December 2010 (14 years ago). It is based on the Rana (2009−2011) architecture. It features 3 cores and 3 threads. Base frequency is 3.3 GHz, with boost up to 3.3 GHz. L3 cache: 0 kB. 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: 1,938 points. Launch price was $88.
Xeon X6550
The Xeon X6550 is manufactured by Intel. It was released in 2015-01-01. It features 8 cores and 16 threads. Base frequency is 2 GHz, with boost up to 2.4 GHz. L3 cache: 18 MB L3 Cache. Built on 45 nm process technology. Socket: LGA1567. Thermal design power (TDP): 130 Watt. Passmark benchmark score: 1,936 points. Launch price was $800.
Processing Power
The Athlon II X3 455 packs 3 cores / 3 threads, while the Xeon X6550 offers 8 cores / 16 threads — the Xeon X6550 has 5 more cores. Boost clocks reach 3.3 GHz on the Athlon II X3 455 versus 2.4 GHz on the Xeon X6550 — a 31.6% clock advantage for the Athlon II X3 455 (base: 3.3 GHz vs 2 GHz). The Athlon II X3 455 is built on the Rana (2009−2011) architecture. In PassMark, the Athlon II X3 455 scores 1,938 against the Xeon X6550's 1,936 — a 0.1% lead for the Athlon II X3 455. L3 cache: 0 kB on the Athlon II X3 455 vs 18 MB L3 Cache on the Xeon X6550.
| Feature | Athlon II X3 455 | Xeon X6550 |
|---|---|---|
| Cores / Threads | 3 / 3 | 8 / 16+167% |
| Boost Clock | 3.3 GHz+38% | 2.4 GHz |
| Base Clock | 3.3 GHz+65% | 2 GHz |
| L3 Cache | 0 kB | 18 MB L3 Cache |
| L2 Cache | 512 kB (per core) | — |
| Process | 45 nm | 45 nm |
| Architecture | Rana (2009−2011) | — |
| PassMark | 1,938 | 1,936 |
Memory & Platform
The Athlon II X3 455 uses the AM3 socket (PCIe 2.0), while the Xeon X6550 uses LGA1567 (PCIe 5.0) — making them incompatible on the same motherboard. Both support up to DDR3-1333 memory speed. Memory channels: 2 (Athlon II X3 455) vs 4 (Xeon X6550). Chipset compatibility: AMD AM3 (Athlon II X3 455) and Nehalem-EX (Xeon X6550).
| Feature | Athlon II X3 455 | Xeon X6550 |
|---|---|---|
| Socket | AM3 | LGA1567 |
| PCIe Generation | PCIe 2.0 | PCIe 5.0+150% |
| Max RAM Speed | DDR3-1333 | DDR3-1333 |
| Max RAM Capacity | 32 GB | — |
| RAM Channels | 2 | 4+100% |
| ECC Support | ❌ | ✅ |
| PCIe Lanes | 0 | — |
Advanced Features
Virtualization: not specified (Athlon II X3 455) / VT-x, VT-d, EPT (Xeon X6550). Primary use case: Xeon X6550 targets Server. Direct competitor: Xeon X6550 rivals Core i7-980X.
| Feature | Athlon II X3 455 | Xeon X6550 |
|---|---|---|
| Integrated GPU | No | No |
| Unlocked | — | No |
| AVX-512 | — | No |
| Virtualization | — | VT-x, VT-d, EPT |
| Target Use | — | Server |
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