CPU
GPU
Athlon II X3 445
Xeon E5503
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 445 is positioned at rank 781 and the Xeon E5503 is on rank 895, so the Athlon II X3 445 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 445
Performance Per Dollar Xeon E5503
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Athlon II X3 445 | Xeon E5503 |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ⚠️ Higher cost ($15) | ✅ More affordable ($0) |
| Longevity | 🛑 Legacy (Rana (2009−2011) / 45 nm) | 🛑 Legacy (Gainestown (2009−2010) / 45 nm) |
💎 Value Proposition
| Insight | Athlon II X3 445 | Xeon E5503 |
|---|---|---|
| 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 445 and Xeon E5503
Athlon II X3 445
The Athlon II X3 445 is manufactured by AMD. It was released in 11 May 2010 (15 years ago). It is based on the Rana (2009−2011) architecture. It features 3 cores and 3 threads. Base frequency is 3.1 GHz, with boost up to 3.1 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: 1,807 points. Launch price was $91.
Xeon E5503
The Xeon E5503 is manufactured by Intel. It was released in 16 March 2010 (15 years ago). It is based on the Gainestown (2009−2010) architecture. It features 2 cores and 2 threads. Base frequency is 2 GHz, with boost up to 2 GHz. L3 cache: 4 MB (total). L2 cache: 256 kB (per core). Built on 45 nm process technology. Socket: LGA1366. Thermal design power (TDP): 80 Watt. Memory support: DDR3. Passmark benchmark score: 1,815 points. Launch price was $287.
Processing Power
The Athlon II X3 445 packs 3 cores / 3 threads, while the Xeon E5503 offers 2 cores / 2 threads — the Athlon II X3 445 has 1 more core. Boost clocks reach 3.1 GHz on the Athlon II X3 445 versus 2 GHz on the Xeon E5503 — a 43.1% clock advantage for the Athlon II X3 445 (base: 3.1 GHz vs 2 GHz). The Athlon II X3 445 uses the Rana (2009−2011) architecture (45 nm), while the Xeon E5503 uses Gainestown (2009−2010) (45 nm). In PassMark, the Athlon II X3 445 scores 1,807 against the Xeon E5503's 1,815 — a 0.4% lead for the Xeon E5503. L3 cache: 0 kB on the Athlon II X3 445 vs 4 MB (total) on the Xeon E5503.
| Feature | Athlon II X3 445 | Xeon E5503 |
|---|---|---|
| Cores / Threads | 3 / 3+50% | 2 / 2 |
| Boost Clock | 3.1 GHz+55% | 2 GHz |
| Base Clock | 3.1 GHz+55% | 2 GHz |
| L3 Cache | 0 kB | 4 MB (total) |
| L2 Cache | 512 kB (per core)+100% | 256 kB (per core) |
| Process | 45 nm | 45 nm |
| Architecture | Rana (2009−2011) | Gainestown (2009−2010) |
| PassMark | 1,807 | 1,815 |
Memory & Platform
The Athlon II X3 445 uses the AM3 socket (PCIe 2.0), while the Xeon E5503 uses LGA1366 (PCIe 2.0) — making them incompatible on the same motherboard.
| Feature | Athlon II X3 445 | Xeon E5503 |
|---|---|---|
| Socket | AM3 | LGA1366 |
| PCIe Generation | PCIe 2.0 | PCIe 2.0 |
| Max RAM Speed | DDR3-1333 | — |
| Max RAM Capacity | 32 GB | — |
| RAM Channels | 2 | — |
| ECC Support | ❌ | — |
| PCIe Lanes | 0 | — |
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The most powerful cpus ranked by PassMark CPU Mark benchmark scores.
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