Mobile Pentium III 400 vs Ryzen 5 8640U
Primary details
Comparing Ryzen 5 8640U and Mobile Pentium III 400 processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 570 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Laptop |
| Power efficiency | 44.75 | no data |
| Architecture codename | Hawk Point-U (Zen 4) (2023) | Coppermine (1999−2001) |
| Release date | 6 December 2023 (1 year ago) | 25 October 1999 (25 years ago) |
| Launch price (MSRP) | no data | $348 |
Detailed specifications
Ryzen 5 8640U and Mobile Pentium III 400 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 | 6 (Hexa-Core) | 1 (Single-Core) |
| Threads | 12 | 1 |
| Base clock speed | 3.5 GHz | no data |
| Boost clock speed | 4.9 GHz | 0.4 GHz |
| L1 cache | 64 KB (per core) | 32 KB |
| L2 cache | 1 MB (per core) | 256 KB |
| L3 cache | 16 MB (shared) | no data |
| Chip lithography | 4 nm | 180 nm |
| Die size | 178 mm2 | 106 mm2 |
| Maximum core temperature | 100 °C | no data |
| Number of transistors | 25,000 million | 28 million |
| 64 bit support | + | - |
Compatibility
Information on Ryzen 5 8640U and Mobile Pentium III 400 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 | FP8 | Intel Micro-BGA2 |
| Power consumption (TDP) | 28 Watt | 10 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Ryzen 5 8640U and Mobile Pentium III 400. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Ryzen AI, AES, AVX, AVX2, AVX512, FMA3, MMX (+), SHA, SSE, SSE2, SSE3, SSE4.1, SSE4.2, SSE4A, SSSE3 | no data |
| AES-NI | + | - |
| AVX | + | - |
| Precision Boost 2 | + | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Ryzen 5 8640U and Mobile Pentium III 400 are enumerated here.
| AMD-V | + | - |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Ryzen 5 8640U and Mobile Pentium III 400. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR5 | no data |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | AMD Radeon 760M ( - 2600 MHz) | On certain motherboards (Chipset feature) |
Peripherals
Specifications and connection of peripherals supported by Ryzen 5 8640U and Mobile Pentium III 400.
| PCIe version | 4.0 | no data |
| PCI Express lanes | 20 | no data |
Pros & cons summary
| Recency | 6 December 2023 | 25 October 1999 |
| Physical cores | 6 | 1 |
| Threads | 12 | 1 |
| Chip lithography | 4 nm | 180 nm |
| Power consumption (TDP) | 28 Watt | 10 Watt |
Ryzen 5 8640U has an age advantage of 24 years, 500% more physical cores and 1100% more threads, and a 4400% more advanced lithography process.
Mobile Pentium III 400, on the other hand, has 180% lower power consumption.
We couldn't decide between Ryzen 5 8640U and Mobile Pentium III 400. We've got no test results to judge.
Should you still have questions on choice between Ryzen 5 8640U and Mobile Pentium III 400, 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.
