Xeon 2.66 vs Sempron 3400+
Xeon 2.66
Sempron 3400+
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 2.66 is positioned at rank 1028 and the Sempron 3400+ is on rank 907, so the Sempron 3400+ offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Xeon 2.66
Performance Per Dollar Sempron 3400+
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Xeon 2.66 | Sempron 3400+ |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ⚠️ Higher cost ($10) | ✅ More affordable ($0) |
| Longevity | 🛑 Legacy (Prestonia (2002) / 130 nm) | 🛑 Legacy (Palermo (2001−2005) / 90 nm) |
💎 Value Proposition
| Insight | Xeon 2.66 | Sempron 3400+ |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ⚠️ Higher cost ($10) | ✅ 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 Xeon 2.66 and Sempron 3400+
Xeon 2.66
The Xeon 2.66 is manufactured by Intel. It was released in 2015-01-01. It is based on the Prestonia (2002) architecture. It features 1 cores and 1 threads. Max frequency: 2.66 GHz. L3 cache: 0 kB. L2 cache: 512 kB. Built on 130 nm process technology. Socket: PGA604. Thermal design power (TDP): 89 Watt. Passmark benchmark score: 445 points. Launch price was $800.
Sempron 3400+
The Sempron 3400+ is manufactured by AMD. It was released in 1 October 2005 (20 years ago). It is based on the Palermo (2001−2005) architecture. It features 1 cores and 1 threads. Max frequency: 2 GHz. L3 cache: 0 kB. L2 cache: 128 kB. Built on 90 nm process technology. Socket: 939. Thermal design power (TDP): 62 Watt. Memory support: DDR1. Passmark benchmark score: 433 points. Launch price was $30.
Processing Power
Both the Xeon 2.66 and Sempron 3400+ share an identical 1-core/1-thread configuration. Boost clocks reach 2.66 GHz on the Xeon 2.66 versus 2 GHz on the Sempron 3400+ — a 28.3% clock advantage for the Xeon 2.66. The Xeon 2.66 uses the Prestonia (2002) architecture (130 nm), while the Sempron 3400+ uses Palermo (2001−2005) (90 nm). In PassMark, the Xeon 2.66 scores 445 against the Sempron 3400+'s 433 — a 2.7% lead for the Xeon 2.66. Both processors carry 0 kB of L3 cache.
| Feature | Xeon 2.66 | Sempron 3400+ |
|---|---|---|
| Cores / Threads | 1 / 1 | 1 / 1 |
| Boost Clock | 2.66 GHz+33% | 2 GHz |
| L3 Cache | 0 kB | 0 kB |
| L2 Cache | 512 kB+300% | 128 kB |
| Process | 130 nm | 90 nm-31% |
| Architecture | Prestonia (2002) | Palermo (2001−2005) |
| PassMark | 445+3% | 433 |
Memory & Platform
The Xeon 2.66 uses the PGA604 socket (PCIe 2.0), while the Sempron 3400+ uses 939 (PCIe 2.0) — making them incompatible on the same motherboard.
| Feature | Xeon 2.66 | Sempron 3400+ |
|---|---|---|
| Socket | PGA604 | 939 |
| PCIe Generation | PCIe 2.0 | PCIe 2.0 |
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