Ryzen 5 8640U vs Pentium III 1400S
Aggregate performance score
Ryzen 5 8640U outperforms Pentium III 1400S by a whopping 10933% based on our aggregate benchmark results.
Primary details
Comparing Pentium III 1400S and Ryzen 5 8640U processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 3360 | 570 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Desktop processor | Laptop |
| Power efficiency | 0.35 | 44.72 |
| Architecture codename | Tualatin (2000−2002) | Hawk Point-U (Zen 4) (2023) |
| Release date | January 2002 (22 years ago) | 6 December 2023 (1 year ago) |
Detailed specifications
Pentium III 1400S and Ryzen 5 8640U 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) | 6 (Hexa-Core) |
| Threads | 1 | 12 |
| Base clock speed | no data | 3.5 GHz |
| Boost clock speed | 1.4 GHz | 4.9 GHz |
| L1 cache | 8 KB | 64 KB (per core) |
| L2 cache | 512 KB | 1 MB (per core) |
| L3 cache | 0 KB | 16 MB (shared) |
| Chip lithography | 130 nm | 4 nm |
| Die size | 80 mm2 | 178 mm2 |
| Maximum core temperature | no data | 100 °C |
| Maximum case temperature (TCase) | 69 °C | no data |
| Number of transistors | 44 million | 25,000 million |
| 64 bit support | - | + |
| Windows 11 compatibility | - | no data |
Compatibility
Information on Pentium III 1400S and Ryzen 5 8640U 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 | FP8 |
| Power consumption (TDP) | 32 Watt | 28 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Pentium III 1400S and Ryzen 5 8640U. You'll probably need this information if you require some particular technology.
| Instruction set extensions | no data | Ryzen AI, AES, AVX, AVX2, AVX512, FMA3, MMX (+), SHA, SSE, SSE2, SSE3, SSE4.1, SSE4.2, SSE4A, SSSE3 |
| AES-NI | - | + |
| AVX | - | + |
| Precision Boost 2 | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Pentium III 1400S and Ryzen 5 8640U are enumerated here.
| AMD-V | - | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Pentium III 1400S and Ryzen 5 8640U. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | no data | DDR5 |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | no data | AMD Radeon 760M ( - 2600 MHz) |
Peripherals
Specifications and connection of peripherals supported by Pentium III 1400S and Ryzen 5 8640U.
| PCIe version | no data | 4.0 |
| PCI Express lanes | no data | 20 |
Synthetic benchmark performance
Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.
Combined synthetic benchmark score
This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.
Passmark
Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.
Pros & cons summary
| Performance score | 0.12 | 13.24 |
| Physical cores | 1 | 6 |
| Threads | 1 | 12 |
| Chip lithography | 130 nm | 4 nm |
| Power consumption (TDP) | 32 Watt | 28 Watt |
Ryzen 5 8640U has a 10933.3% higher aggregate performance score, 500% more physical cores and 1100% more threads, a 3150% more advanced lithography process, and 14.3% lower power consumption.
The Ryzen 5 8640U is our recommended choice as it beats the Pentium III 1400S in performance tests.
Note that Pentium III 1400S is a desktop processor while Ryzen 5 8640U is a notebook one.
Should you still have questions on choice between Pentium III 1400S and Ryzen 5 8640U, ask them in Comments section, and we shall answer.
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