
Xeon L5408 vs Core Duo T2600

Xeon L5408

Core Duo T2600
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 L5408 is positioned at rank 901 and the Core Duo T2600 is on rank 350, 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 Xeon L5408
Performance Per Dollar Core Duo T2600
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Xeon L5408 | Core Duo T2600 |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | Equivalent pricing | Equivalent pricing |
| Longevity | 🛑 Legacy (Harpertown (2007−2008) / 45 nm) | 🛑 Legacy (Yonah (2005−2006) / 65 nm) |
💎 Value Proposition
| Insight | Xeon L5408 | Core Duo T2600 |
|---|---|---|
| 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 L5408 and Core Duo T2600

Xeon L5408
The Xeon L5408 is manufactured by Intel. It was released in 2015-01-01. It is based on the Harpertown (2007−2008) architecture. It features 4 cores and 4 threads. Base frequency is 2.133 GHz, with boost up to 0.13 GHz. L2 cache: 6 MB (total). Built on 45 nm process technology. Socket: LGA771. Thermal design power (TDP): 40 Watt. Memory support: DDR2, DDR3 Depends on motherboard. Passmark benchmark score: 1,769 points. Launch price was $800.

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.
Processing Power
The Xeon L5408 packs 4 cores / 4 threads, while the Core Duo T2600 offers 2 cores / 2 threads — the Xeon L5408 has 2 more cores. Boost clocks reach 0.13 GHz on the Xeon L5408 versus 2.16 GHz on the Core Duo T2600 — a 177.3% clock advantage for the Core Duo T2600 (base: 2.133 GHz vs 2.16 GHz). The Xeon L5408 uses the Harpertown (2007−2008) architecture (45 nm), while the Core Duo T2600 uses Yonah (2005−2006) (65 nm). In PassMark, the Xeon L5408 scores 1,769 against the Core Duo T2600's 1,765 — a 0.2% lead for the Xeon L5408.
| Feature | Xeon L5408 | Core Duo T2600 |
|---|---|---|
| Cores / Threads | 4 / 4+100% | 2 / 2 |
| Boost Clock | 0.13 GHz | 2.16 GHz+1562% |
| Base Clock | 2.133 GHz | 2.16 GHz+1% |
| L3 Cache | — | 0 kB |
| L2 Cache | 6 MB (total)+200% | 2 MB |
| Process | 45 nm-31% | 65 nm |
| Architecture | Harpertown (2007−2008) | Yonah (2005−2006) |
| PassMark | 1,769 | 1,765 |
Memory & Platform
The Xeon L5408 uses the LGA771 socket (PCIe 2.0), while the Core Duo T2600 uses PGA478 (PCIe 1.1) — making them incompatible on the same motherboard.
| Feature | Xeon L5408 | Core Duo T2600 |
|---|---|---|
| Socket | LGA771 | PGA478 |
| PCIe Generation | PCIe 2.0+82% | PCIe 1.1 |
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