Athlon 800 vs Pentium III 1400
Primary details
Comparing Pentium III 1400 and Athlon 800 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | not rated | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Desktop processor | Desktop processor |
| Architecture codename | Tualatin (2000−2002) | Thunderbird (1999−2000) |
| Release date | December 2001 (22 years ago) | 20 December 1999 (24 years ago) |
| Launch price (MSRP) | no data | $799 |
Detailed specifications
Pentium III 1400 and Athlon 800 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 | 1.4 GHz | 0.8 GHz |
| L1 cache | 8 KB | 128 KB |
| L2 cache | 256 KB | 512 KB |
| L3 cache | 0 KB | 0 KB |
| Chip lithography | 130 nm | 180 nm |
| Die size | 80 mm2 | 102 mm2 |
| Maximum case temperature (TCase) | 69 °C | 70 °C |
| Number of transistors | 44 million | 22 million |
| 64 bit support | - | - |
| Windows 11 compatibility | - | - |
Compatibility
Information on Pentium III 1400 and Athlon 800 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 | 1 |
| Socket | 370 | A |
| Power consumption (TDP) | 31 Watt | 43 Watt |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Pentium III 1400 and Athlon 800. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | no data | DDR1 |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | no data | N/A |
Pros & cons summary
| Chip lithography | 130 nm | 180 nm |
| Power consumption (TDP) | 31 Watt | 43 Watt |
Pentium III 1400 has a 38.5% more advanced lithography process, and 38.7% lower power consumption.
We couldn't decide between Pentium III 1400 and Athlon 800. We've got no test results to judge.
Should you still have questions on choice between Pentium III 1400 and Athlon 800, ask them in Comments section, and we shall answer.
Similar processor comparisons
We picked several similar comparisons of processors in the same market segment and performance relatively close to those reviewed on this page.
