Atom x7405C vs Mobile Pentium III 400
Primary details
Comparing Mobile Pentium III 400 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 | Laptop | Laptop |
| Architecture codename | Coppermine (1999−2001) | Amston Lake (2024) |
| Release date | 25 October 1999 (25 years ago) | 8 April 2024 (less than a year ago) |
| Launch price (MSRP) | $348 | $57 |
Detailed specifications
Mobile Pentium III 400 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 | 0.4 GHz | 3.4 GHz |
| L1 cache | 32 KB | 96 KB (per core) |
| L2 cache | 256 KB | 2 MB (shared) |
| L3 cache | no data | 6 MB (shared) |
| Chip lithography | 180 nm | 10 nm |
| Die size | 106 mm2 | no data |
| Number of transistors | 28 million | no data |
| 64 bit support | - | + |
Compatibility
Information on Mobile Pentium III 400 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 | Intel Micro-BGA2 | Intel BGA 1264 |
| Power consumption (TDP) | 10 Watt | 12 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Mobile Pentium III 400 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 Mobile Pentium III 400 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 Mobile Pentium III 400 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 | On certain motherboards (Chipset feature) | N/A |
Peripherals
Specifications and connection of peripherals supported by Mobile Pentium III 400 and Atom x7405C.
| PCIe version | no data | 3.0 |
| PCI Express lanes | no data | 9 |
Pros & cons summary
| Recency | 25 October 1999 | 8 April 2024 |
| Physical cores | 1 | 4 |
| Threads | 1 | 4 |
| Chip lithography | 180 nm | 10 nm |
| Power consumption (TDP) | 10 Watt | 12 Watt |
Mobile Pentium III 400 has 20% lower power consumption.
Atom x7405C, on the other hand, has an age advantage of 24 years, 300% more physical cores and 300% more threads, and a 1700% more advanced lithography process.
We couldn't decide between Mobile Pentium III 400 and Atom x7405C. We've got no test results to judge.
Should you still have questions on choice between Mobile Pentium III 400 and Atom x7405C, ask them in Comments section, and we shall answer.
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