CPU
GPU
Core Duo T2600
Xeon E5405
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 Duo T2600 is positioned at rank 350 and the Xeon E5405 is on rank 906, so the Core Duo T2600 offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Core Duo T2600
Performance Per Dollar Xeon E5405
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Core Duo T2600 | Xeon E5405 |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ✅ More affordable ($0) | ⚠️ Higher cost ($15) |
| Longevity | 🛑 Legacy (Yonah (2005−2006) / 65 nm) | 🛑 Legacy (Harpertown (2007−2008) / 45 nm) |
💎 Value Proposition
| Insight | Core Duo T2600 | Xeon E5405 |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($0) | ⚠️ Higher cost ($15) |
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 Duo T2600 and Xeon E5405
Core Duo T2600
The Core Duo T2600 is manufactured by Intel. It was released in 5 January 2006 (19 years ago). It is based on the Yonah (2005−2006) architecture. It features 2 cores and 2 threads. Base frequency is 2.16 GHz, with boost up to 2.16 GHz. L3 cache: 0 kB. L2 cache: 2 MB. Built on 65 nm process technology. Socket: PGA478. Thermal design power (TDP): 31 Watt. Memory support: DDR1. Passmark benchmark score: 1,765 points. Launch price was $440.
Xeon E5405
The Xeon E5405 is manufactured by Intel. It was released in 11 November 2007 (18 years ago). It is based on the Harpertown (2007−2008) architecture. It features 4 cores and 4 threads. Base frequency is 2 GHz, with boost up to 2 GHz. L3 cache: 12 MB L2 Cache. L2 cache: 6 MB (total). Built on 45 nm process technology. Socket: LGA771. Thermal design power (TDP): 80 Watt. Memory support: DDR2, DDR3 Depends on motherboard. Passmark benchmark score: 1,753 points. Launch price was $209.
Processing Power
The Core Duo T2600 packs 2 cores / 2 threads, while the Xeon E5405 offers 4 cores / 4 threads — the Xeon E5405 has 2 more cores. Boost clocks reach 2.16 GHz on the Core Duo T2600 versus 2 GHz on the Xeon E5405 — a 7.7% clock advantage for the Core Duo T2600 (base: 2.16 GHz vs 2 GHz). The Core Duo T2600 uses the Yonah (2005−2006) architecture (65 nm), while the Xeon E5405 uses Harpertown (2007−2008) (45 nm). In PassMark, the Core Duo T2600 scores 1,765 against the Xeon E5405's 1,753 — a 0.7% lead for the Core Duo T2600. L3 cache: 0 kB on the Core Duo T2600 vs 12 MB L2 Cache on the Xeon E5405.
| Feature | Core Duo T2600 | Xeon E5405 |
|---|---|---|
| Cores / Threads | 2 / 2 | 4 / 4+100% |
| Boost Clock | 2.16 GHz+8% | 2 GHz |
| Base Clock | 2.16 GHz+8% | 2 GHz |
| L3 Cache | 0 kB | 12 MB L2 Cache |
| L2 Cache | 2 MB | 6 MB (total)+200% |
| Process | 65 nm | 45 nm-31% |
| Architecture | Yonah (2005−2006) | Harpertown (2007−2008) |
| PassMark | 1,765 | 1,753 |
Memory & Platform
The Core Duo T2600 uses the PGA478 socket (PCIe 1.1), while the Xeon E5405 uses LGA771 (PCIe 2.0) — making them incompatible on the same motherboard.
| Feature | Core Duo T2600 | Xeon E5405 |
|---|---|---|
| Socket | PGA478 | LGA771 |
| PCIe Generation | PCIe 1.1 | PCIe 2.0+82% |
| Max RAM Speed | — | DDR2-667 |
| Max RAM Capacity | — | 32 GB |
| RAM Channels | — | 2 |
| ECC Support | — | ✅ |
| PCIe Lanes | — | 0 |
Advanced Features
Virtualization: not specified (Core Duo T2600) / VT-x (Xeon E5405). Primary use case: Xeon E5405 targets Server.
| Feature | Core Duo T2600 | Xeon E5405 |
|---|---|---|
| Integrated GPU | — | No |
| Unlocked | — | No |
| AVX-512 | — | No |
| Virtualization | — | VT-x |
| Target Use | — | Server |
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