Xeon 2.66 vs Opteron 142
Aggregate performance score
Primary details
Comparing Opteron 142 and Xeon 2.66 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 3128 | 3122 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Server | Server |
| Power efficiency | 0.30 | 0.29 |
| Architecture codename | SledgeHammer (2003−2005) | Prestonia (2002) |
| Release date | September 2003 (21 year ago) | November 2002 (22 years ago) |
Detailed specifications
Opteron 142 and Xeon 2.66 basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.
| Physical cores | 1 (Single-Core) | 1 (Single-Core) |
| Threads | 1 | 1 |
| Boost clock speed | 1.6 GHz | 2.66 GHz |
| L1 cache | 128 KB | 16 KB |
| L2 cache | 1 MB | 512 KB |
| L3 cache | 0 KB | 0 KB |
| Chip lithography | 130 nm | 130 nm |
| Die size | 193 mm2 | 217 mm2 |
| Number of transistors | 106 million | 55 million |
| 64 bit support | + | - |
| Windows 11 compatibility | - | - |
Compatibility
Information on Opteron 142 and Xeon 2.66 compatibility with other computer components: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.
| Number of CPUs in a configuration | 1 | 2 |
| Socket | 940 | 604 |
| Power consumption (TDP) | 85 Watt | 89 Watt |
Synthetic benchmark performance
Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.
Combined synthetic benchmark score
This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.
Passmark
Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.
Pros & cons summary
| Power consumption (TDP) | 85 Watt | 89 Watt |
Opteron 142 has 4.7% lower power consumption.
Given the minimal performance differences, no clear winner can be declared between Opteron 142 and Xeon 2.66.
Should you still have questions on choice between Opteron 142 and Xeon 2.66, ask them in Comments section, and we shall answer.
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