Pentium 4 660 vs Athlon II X2 255
Aggregate performance score
Athlon II X2 255 outperforms Pentium 4 660 by a whopping 252% based on our aggregate benchmark results.
Primary details
Comparing Athlon II X2 255 and Pentium 4 660 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 2679 | 3209 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 0.02 | no data |
| Market segment | Desktop processor | Desktop processor |
| Series | no data | Pentium 4 |
| Power efficiency | 1.08 | 0.17 |
| Architecture codename | Regor (2009−2013) | Prescott 2M |
| Release date | 25 January 2010 (14 years ago) | no data |
| Launch price (MSRP) | $60 | no data |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Athlon II X2 255 and Pentium 4 660 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 | 2 (Dual-core) | 1 (Single-Core) |
| Threads | 2 | 1 |
| Base clock speed | 3.1 GHz | 3.6 GHz |
| Boost clock speed | 3.1 GHz | 3.6 GHz |
| Bus rate | no data | 800 MHz |
| L1 cache | 128 KB | no data |
| L2 cache | 1 MB | no data |
| L3 cache | 0 KB | 2 MB L2 Cache |
| Chip lithography | 45 nm | 90 nm |
| Die size | 117 mm2 | no data |
| Maximum core temperature | no data | 71 °C |
| Number of transistors | 410 million | no data |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
| VID voltage range | no data | 1.2V-1.4V |
Compatibility
Information on Athlon II X2 255 and Pentium 4 660 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 | no data |
| Socket | AM3 | PLGA775,PPGA775 |
| Power consumption (TDP) | 65 Watt | 115 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Athlon II X2 255 and Pentium 4 660. 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
Athlon II X2 255 and Pentium 4 660 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 Athlon II X2 255 and Pentium 4 660 are enumerated here.
| VT-x | no data | - |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Athlon II X2 255 and Pentium 4 660. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | no data |
Peripherals
Specifications and connection of peripherals supported by Athlon II X2 255 and Pentium 4 660.
| PCIe version | 2.0 | no data |
Pros & cons summary
| Performance score | 0.74 | 0.21 |
| Physical cores | 2 | 1 |
| Threads | 2 | 1 |
| Chip lithography | 45 nm | 90 nm |
| Power consumption (TDP) | 65 Watt | 115 Watt |
Athlon II X2 255 has a 252.4% higher aggregate performance score, 100% more physical cores and 100% more threads, a 100% more advanced lithography process, and 76.9% lower power consumption.
The Athlon II X2 255 is our recommended choice as it beats the Pentium 4 660 in performance tests.
Should you still have questions on choice between Athlon II X2 255 and Pentium 4 660, ask them in Comments section, and we shall answer.
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