
Core 2 Duo T9550 vs Core 2 Quad Q9100

Core 2 Duo T9550

Core 2 Quad Q9100
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 Core 2 Duo T9550 is positioned at rank 342 and the Core 2 Quad Q9100 is on rank 69, so the Core 2 Quad Q9100 offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Core 2 Duo T9550
Performance Per Dollar Core 2 Quad Q9100
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Core 2 Duo T9550 | Core 2 Quad Q9100 |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ✅ More affordable ($0) | ⚠️ Higher cost ($14) |
| Longevity | 🛑 Legacy (Penryn (2008−2011) / 45 nm) | 🛑 Legacy (Penryn (2008−2011) / 45 nm) |
💎 Value Proposition
| Insight | Core 2 Duo T9550 | Core 2 Quad Q9100 |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($0) | ⚠️ Higher cost ($14) |
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 Core 2 Duo T9550 and Core 2 Quad Q9100

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.

Core 2 Quad Q9100
The Core 2 Quad Q9100 is manufactured by Intel. It was released in 2008-01-01. It is based on the Penryn (2008−2011) architecture. It features 4 cores and 4 threads. Base frequency is 2.26 GHz, with boost up to 2.26 GHz. L3 cache: 0 kB. L2 cache: 6 MB (total). Built on 45 nm process technology. Socket: PGA478. Thermal design power (TDP): 45 Watt. Passmark benchmark score: 1,806 points. Launch price was $249.
Processing Power
The Core 2 Duo T9550 packs 2 cores / 2 threads, while the Core 2 Quad Q9100 offers 4 cores / 4 threads — the Core 2 Quad Q9100 has 2 more cores. Boost clocks reach 2.66 GHz on the Core 2 Duo T9550 versus 2.26 GHz on the Core 2 Quad Q9100 — a 16.3% clock advantage for the Core 2 Duo T9550 (base: 2.66 GHz vs 2.26 GHz). Both are built on the Penryn (2008−2011) architecture using a 45 nm process. In PassMark, the Core 2 Duo T9550 scores 1,804 against the Core 2 Quad Q9100's 1,806 — a 0.1% lead for the Core 2 Quad Q9100. L3 cache: 6 MB L2 Cache on the Core 2 Duo T9550 vs 0 kB on the Core 2 Quad Q9100.
| Feature | Core 2 Duo T9550 | Core 2 Quad Q9100 |
|---|---|---|
| Cores / Threads | 2 / 2 | 4 / 4+100% |
| Boost Clock | 2.66 GHz+18% | 2.26 GHz |
| Base Clock | 2.66 GHz+18% | 2.26 GHz |
| L3 Cache | 6 MB L2 Cache | 0 kB |
| L2 Cache | 6 MB | 6 MB (total) |
| Process | 45 nm | 45 nm |
| Architecture | Penryn (2008−2011) | Penryn (2008−2011) |
| PassMark | 1,804 | 1,806 |
Memory & Platform
Both processors use the PGA478 socket with PCIe 1.1.
| Feature | Core 2 Duo T9550 | Core 2 Quad Q9100 |
|---|---|---|
| Socket | PGA478 | PGA478 |
| PCIe Generation | PCIe 1.1 | PCIe 1.1 |
| Max RAM Speed | — | DDR3-1066 |
| Max RAM Capacity | — | 8 GB |
| RAM Channels | — | 2 |
| ECC Support | — | ❌ |
| PCIe Lanes | — | 0 |
Advanced Features
Virtualization: not specified (Core 2 Duo T9550) / VT-x (Core 2 Quad Q9100). Primary use case: Core 2 Quad Q9100 targets Mobile.
| Feature | Core 2 Duo T9550 | Core 2 Quad Q9100 |
|---|---|---|
| Integrated GPU | — | No |
| Unlocked | — | No |
| AVX-512 | — | No |
| Virtualization | — | VT-x |
| Target Use | — | Mobile |
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