Pentium III 866 vs Athlon 64 X2 4200+
Primary details
Comparing Athlon 64 X2 4200+ and Pentium III 866 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 2940 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Desktop processor | Desktop processor |
| Power efficiency | 0.49 | no data |
| Architecture codename | Manchester (2005−2006) | Coppermine T (2000) |
| Release date | December 2006 (18 years ago) | 20 March 2000 (24 years ago) |
| Launch price (MSRP) | $309 | no data |
Detailed specifications
Athlon 64 X2 4200+ and Pentium III 866 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 |
| Boost clock speed | 2.2 GHz | 0.87 GHz |
| L1 cache | 256K | 32 KB |
| L2 cache | 512 KB | 256 KB |
| L3 cache | 0 KB | 0 KB |
| Chip lithography | 90 nm | 180 nm |
| Die size | 220 mm2 | 106 mm2 |
| Maximum case temperature (TCase) | no data | 80 °C |
| Number of transistors | 154 million | 28 million |
| 64 bit support | + | - |
| Windows 11 compatibility | - | - |
Compatibility
Information on Athlon 64 X2 4200+ and Pentium III 866 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 | 939 | 370 |
| Power consumption (TDP) | 89 Watt | 27 Watt |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | no data | On certain motherboards (Chipset feature) |
Pros & cons summary
| Physical cores | 2 | 1 |
| Threads | 2 | 1 |
| Chip lithography | 90 nm | 180 nm |
| Power consumption (TDP) | 89 Watt | 27 Watt |
Athlon 64 X2 4200+ has 100% more physical cores and 100% more threads, and a 100% more advanced lithography process.
Pentium III 866, on the other hand, has 229.6% lower power consumption.
We couldn't decide between Athlon 64 X2 4200+ and Pentium III 866. We've got no test results to judge.
Should you still have questions on choice between Athlon 64 X2 4200+ and Pentium III 866, ask them in Comments section, and we shall answer.
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