Xeon 2.66 vs Opteron 144
Xeon 2.66
Opteron 144
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 Opteron 144 is on rank 944, so the Opteron 144 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 Opteron 144
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Xeon 2.66 | Opteron 144 |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ✅ More affordable ($10) | ⚠️ Higher cost ($29) |
| Longevity | 🛑 Legacy (Prestonia (2002) / 130 nm) | 🛑 Legacy (SledgeHammer (2003−2005) / 130 nm) |
💎 Value Proposition
| Insight | Xeon 2.66 | Opteron 144 |
|---|---|---|
| Cost Efficiency | ✅ Better overall value (+178%) | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($10) | ⚠️ Higher cost ($29) |
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 Opteron 144
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.
Opteron 144
The Opteron 144 is manufactured by AMD. It was released in Junho 2003 (22 years ago). It is based on the SledgeHammer (2003−2005) architecture. It features 1 cores and 1 threads. Max frequency: 1.8 GHz. L3 cache: 0 kB. L2 cache: 1 MB. Built on 130 nm process technology. Socket: 940. Thermal design power (TDP): 85 Watt. Passmark benchmark score: 465 points. Launch price was $65.
Processing Power
Both the Xeon 2.66 and Opteron 144 share an identical 1-core/1-thread configuration. Boost clocks reach 2.66 GHz on the Xeon 2.66 versus 1.8 GHz on the Opteron 144 — a 38.6% clock advantage for the Xeon 2.66. The Xeon 2.66 uses the Prestonia (2002) architecture (130 nm), while the Opteron 144 uses SledgeHammer (2003−2005) (130 nm). In PassMark, the Xeon 2.66 scores 445 against the Opteron 144's 465 — a 4.4% lead for the Opteron 144. Both processors carry 0 kB of L3 cache.
| Feature | Xeon 2.66 | Opteron 144 |
|---|---|---|
| Cores / Threads | 1 / 1 | 1 / 1 |
| Boost Clock | 2.66 GHz+48% | 1.8 GHz |
| L3 Cache | 0 kB | 0 kB |
| L2 Cache | 512 kB | 1 MB+100% |
| Process | 130 nm | 130 nm |
| Architecture | Prestonia (2002) | SledgeHammer (2003−2005) |
| PassMark | 445 | 465+4% |
Memory & Platform
The Xeon 2.66 uses the PGA604 socket (PCIe 2.0), while the Opteron 144 uses 940 (PCIe 2.0) — making them incompatible on the same motherboard.
| Feature | Xeon 2.66 | Opteron 144 |
|---|---|---|
| Socket | PGA604 | 940 |
| PCIe Generation | PCIe 2.0 | PCIe 2.0 |
| Max RAM Speed | — | DDR-400 |
| Max RAM Capacity | — | 4 GB |
| RAM Channels | — | 2 |
| ECC Support | — | ✅ |
| PCIe Lanes | — | 0 |
Advanced Features
Virtualization: not specified (Xeon 2.66) / AMD-V (Opteron 144). Primary use case: Opteron 144 targets Server Legacy.
| Feature | Xeon 2.66 | Opteron 144 |
|---|---|---|
| Integrated GPU | — | No |
| Unlocked | — | No |
| AVX-512 | — | No |
| Virtualization | — | AMD-V |
| Target Use | — | Server Legacy |
Value Analysis
The Xeon 2.66 launched at $337 MSRP, while the Opteron 144 debuted at $65. At current prices ($10 vs $29), the Xeon 2.66 is $19 cheaper. In terms of value (PassMark points per dollar), the Xeon 2.66 delivers 44.5 pts/$ vs 16.0 pts/$ for the Opteron 144 — making the Xeon 2.66 the 94% better value option.
| Feature | Xeon 2.66 | Opteron 144 |
|---|---|---|
| MSRP | $337 | $65-81% |
| Avg Price (30d) | $10-66% | $29 |
| Performance per Dollar | 44.5+178% | 16.0 |
| Release Date | 2002 | 2003 |
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