Pentium III 1400 vs Atom Z500
Aggregate performance score
Atom Z500 outperforms Pentium III 1400 by a significant 27% based on our aggregate benchmark results.
Contents
Primary details
Comparing processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 3585 | 3647 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Desktop processor |
| Series | Intel Atom | no data |
| Power efficiency | 23.14 | 0.38 |
| Designer | Intel | Intel |
| Architecture codename | Silverthorne (2008−2010) | Tualatin (2000−2002) |
| Release date | 2 April 2008 (17 years ago) | December 2001 (24 years ago) |
| Launch price (MSRP) | $45 | no data |
Detailed specifications
Atom Z500 and Pentium III 1400 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 | 0.8 GHz | 1.4 GHz |
| Bus type | FSB | no data |
| Bus rate | 400 MT/s | no data |
| Multiplier | 8 | no data |
| L1 cache | 56 KB | 8 KB |
| L2 cache | 512 KB | 256 KB |
| L3 cache | 0 KB | 0 KB |
| Chip lithography | 45 nm | 130 nm |
| Die size | 24.18 mm2 | 80 mm2 |
| Maximum core temperature | 90 °C | no data |
| Maximum case temperature (TCase) | no data | 69 °C |
| Number of transistors | 47 Million | 44 million |
| 64 bit support | - | - |
| Windows 11 compatibility | - | - |
| VID voltage range | 0.80 -1.1V | no data |
Compatibility
Information on Atom Z500 and Pentium III 1400 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 (Uniprocessor) | 1 |
| Socket | PBGA441 | 370 |
| Power consumption (TDP) | 0.65 Watt | 31 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Atom Z500 and Pentium III 1400. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® SSE2, Intel® SSE3, Intel® SSSE3 | no data |
| 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
Atom Z500 and Pentium III 1400 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 Atom Z500 and Pentium III 1400 are enumerated here.
| VT-d | - | no data |
| VT-x | - | no data |
Pros & cons summary
| Performance score | 0.14 | 0.11 |
| Chip lithography | 45 nm | 130 nm |
Atom Z500 has a 27.3% higher aggregate performance score, and a 188.9% more advanced lithography process.
The Intel Atom Z500 is our recommended choice as it beats the Intel Pentium III 1400 in performance tests.
Be aware that Atom Z500 is a notebook processor while Pentium III 1400 is a desktop one.
Other comparisons
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