Atom x7405C vs Pentium III 1400
Primary details
Comparing Pentium III 1400 and Atom x7405C 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 | Laptop |
| Architecture codename | Tualatin (2000−2002) | Amston Lake (2024) |
| Release date | December 2001 (22 years ago) | 8 April 2024 (less than a year ago) |
| Launch price (MSRP) | no data | $57 |
Detailed specifications
Pentium III 1400 and Atom x7405C 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) | 4 (Quad-Core) |
| Threads | 1 | 4 |
| Base clock speed | no data | 1.7 GHz |
| Boost clock speed | 1.4 GHz | 3.4 GHz |
| L1 cache | 8 KB | 96 KB (per core) |
| L2 cache | 256 KB | 2 MB (shared) |
| L3 cache | 0 KB | 6 MB (shared) |
| Chip lithography | 130 nm | 10 nm |
| Die size | 80 mm2 | no data |
| Maximum case temperature (TCase) | 69 °C | no data |
| Number of transistors | 44 million | no data |
| 64 bit support | - | + |
| Windows 11 compatibility | - | no data |
Compatibility
Information on Pentium III 1400 and Atom x7405C 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 | Intel BGA 1264 |
| Power consumption (TDP) | 31 Watt | 12 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Pentium III 1400 and Atom x7405C. You'll probably need this information if you require some particular technology.
| AES-NI | - | + |
| AVX | - | + |
| Enhanced SpeedStep (EIST) | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Pentium III 1400 and Atom x7405C are enumerated here.
| VT-d | no data | + |
| VT-x | no data | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Pentium III 1400 and Atom x7405C. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | no data | DDR4, DDR5 |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | no data | N/A |
Peripherals
Specifications and connection of peripherals supported by Pentium III 1400 and Atom x7405C.
| PCIe version | no data | 3.0 |
| PCI Express lanes | no data | 9 |
Pros & cons summary
| Physical cores | 1 | 4 |
| Threads | 1 | 4 |
| Chip lithography | 130 nm | 10 nm |
| Power consumption (TDP) | 31 Watt | 12 Watt |
Atom x7405C has 300% more physical cores and 300% more threads, a 1200% more advanced lithography process, and 158.3% lower power consumption.
We couldn't decide between Pentium III 1400 and Atom x7405C. We've got no test results to judge.
Note that Pentium III 1400 is a desktop processor while Atom x7405C is a notebook one.
Should you still have questions on choice between Pentium III 1400 and Atom x7405C, ask them in Comments section, and we shall answer.
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