Opteron 840 vs Pentium 4 660
Primary details
Comparing Pentium 4 660 and Opteron 840 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 3198 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Desktop processor | Server |
| Series | Pentium 4 | no data |
| Power efficiency | 0.17 | no data |
| Architecture codename | Prescott 2M | SledgeHammer (2003−2005) |
| Release date | no data (2024 years ago) | September 2003 (21 year ago) |
Detailed specifications
Pentium 4 660 and Opteron 840 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 |
| Base clock speed | 3.6 GHz | no data |
| Boost clock speed | 3.6 GHz | 1.4 GHz |
| Bus rate | 800 MHz | no data |
| L1 cache | no data | 128 KB |
| L2 cache | no data | 1 MB |
| L3 cache | 2 MB L2 Cache | 0 KB |
| Chip lithography | 90 nm | 130 nm |
| Die size | no data | 193 mm2 |
| Maximum core temperature | 71 °C | no data |
| Number of transistors | no data | 106 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
| VID voltage range | 1.2V-1.4V | no data |
Compatibility
Information on Pentium 4 660 and Opteron 840 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 | no data | 1 |
| Socket | PLGA775,PPGA775 | 940 |
| Power consumption (TDP) | 115 Watt | 85 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Pentium 4 660 and Opteron 840. You'll probably need this information if you require some particular technology.
| Enhanced SpeedStep (EIST) | + | no data |
| Turbo Boost Technology | - | no data |
| Hyper-Threading Technology | + | no data |
| Idle States | + | no data |
| Thermal Monitoring | + | - |
| Demand Based Switching | - | no data |
| FSB parity | - | no data |
Security technologies
Pentium 4 660 and Opteron 840 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | - | no data |
| EDB | + | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Pentium 4 660 and Opteron 840 are enumerated here.
| VT-x | - | no data |
Pros & cons summary
| Chip lithography | 90 nm | 130 nm |
| Power consumption (TDP) | 115 Watt | 85 Watt |
Pentium 4 660 has a 44.4% more advanced lithography process.
Opteron 840, on the other hand, has 35.3% lower power consumption.
We couldn't decide between Pentium 4 660 and Opteron 840. We've got no test results to judge.
Note that Pentium 4 660 is a desktop processor while Opteron 840 is a server/workstation one.
Should you still have questions on choice between Pentium 4 660 and Opteron 840, ask them in Comments section, and we shall answer.
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