Xeon E5503 vs Core 2 Duo T9550
Xeon E5503
Core 2 Duo T9550
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 Xeon E5503 is positioned at rank 895 and the Core 2 Duo T9550 is on rank 342, so the Core 2 Duo T9550 offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Xeon E5503
Performance Per Dollar Core 2 Duo T9550
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Xeon E5503 | Core 2 Duo T9550 |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | Equivalent pricing | Equivalent pricing |
| Longevity | 🛑 Legacy (Gainestown (2009−2010) / 45 nm) | 🛑 Legacy (Penryn (2008−2011) / 45 nm) |
💎 Value Proposition
| Insight | Xeon E5503 | Core 2 Duo T9550 |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | Equivalent pricing | Equivalent pricing |
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 Xeon E5503 and Core 2 Duo T9550
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.
Core 2 Duo T9550
The Core 2 Duo T9550 is manufactured by Intel. It was released in 1 January 2009 (16 years ago). It is based on the Penryn (2008−2011) architecture. It features 2 cores and 2 threads. Base frequency is 2.66 GHz, with boost up to 2.66 GHz. L3 cache: 6 MB L2 Cache. L2 cache: 6 MB. Built on 45 nm process technology. Socket: PGA478. Thermal design power (TDP): 35 Watt. Passmark benchmark score: 1,804 points. Launch price was $316.
Processing Power
Both the Xeon E5503 and Core 2 Duo T9550 share an identical 2-core/2-thread configuration. Boost clocks reach 2 GHz on the Xeon E5503 versus 2.66 GHz on the Core 2 Duo T9550 — a 28.3% clock advantage for the Core 2 Duo T9550 (base: 2 GHz vs 2.66 GHz). The Xeon E5503 uses the Gainestown (2009−2010) architecture (45 nm), while the Core 2 Duo T9550 uses Penryn (2008−2011) (45 nm). In PassMark, the Xeon E5503 scores 1,815 against the Core 2 Duo T9550's 1,804 — a 0.6% lead for the Xeon E5503. L3 cache: 4 MB (total) on the Xeon E5503 vs 6 MB L2 Cache on the Core 2 Duo T9550.
| Feature | Xeon E5503 | Core 2 Duo T9550 |
|---|---|---|
| Cores / Threads | 2 / 2 | 2 / 2 |
| Boost Clock | 2 GHz | 2.66 GHz+33% |
| Base Clock | 2 GHz | 2.66 GHz+33% |
| L3 Cache | 4 MB (total) | 6 MB L2 Cache+50% |
| L2 Cache | 256 kB (per core) | 6 MB+2300% |
| Process | 45 nm | 45 nm |
| Architecture | Gainestown (2009−2010) | Penryn (2008−2011) |
| PassMark | 1,815 | 1,804 |
Memory & Platform
The Xeon E5503 uses the LGA1366 socket (PCIe 2.0), while the Core 2 Duo T9550 uses PGA478 (PCIe 1.1) — making them incompatible on the same motherboard.
| Feature | Xeon E5503 | Core 2 Duo T9550 |
|---|---|---|
| Socket | LGA1366 | PGA478 |
| PCIe Generation | PCIe 2.0+82% | PCIe 1.1 |
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