Ryzen 5 8640U vs i5-8420
Primary details
Comparing Core i5-8420 and Ryzen 5 8640U processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | not rated | 565 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Desktop processor | Laptop |
| Series | Intel Core i5 | no data |
| Power efficiency | no data | 44.62 |
| Architecture codename | Coffee Lake (2017−2019) | Hawk Point-U (Zen 4) (2023) |
| Release date | 1 September 2018 (6 years ago) | 6 December 2023 (less than a year ago) |
Detailed specifications
Core i5-8420 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 | 6 (Hexa-Core) | 6 (Hexa-Core) |
| Threads | 6 | 12 |
| Base clock speed | 2.9 GHz | 3.5 GHz |
| Boost clock speed | 4.1 GHz | 4.9 GHz |
| Bus type | DMI 3.0 | no data |
| Bus rate | 4 × 8 GT/s | no data |
| L1 cache | 384 KB | 64 KB (per core) |
| L2 cache | 1.5 MB | 1 MB (per core) |
| L3 cache | 9 MB (shared) | 16 MB (shared) |
| Chip lithography | 14 nm | 4 nm |
| Die size | 126 mm2 | 178 mm2 |
| Maximum core temperature | no data | 100 °C |
| Maximum case temperature (TCase) | 72 °C | no data |
| Number of transistors | no data | 25,000 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | no data |
Compatibility
Information on Core i5-8420 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 (Uniprocessor) | 1 |
| Socket | 1151 | FP8 |
| Power consumption (TDP) | 65 Watt | 28 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core i5-8420 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 | + | + |
| Enhanced SpeedStep (EIST) | + | no data |
| Precision Boost 2 | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Core i5-8420 and Ryzen 5 8640U are enumerated here.
| AMD-V | - | + |
| VT-d | + | no data |
| VT-x | + | no data |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Core i5-8420 and Ryzen 5 8640U. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4 Dual-channel | DDR5 |
| Maximum memory size | 64 GB | no data |
| Max memory channels | 2 | no data |
| Maximum memory bandwidth | 42.671 GB/s | no data |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card Compare | Intel UHD Graphics 630 | AMD Radeon 760M |
Peripherals
Specifications and connection of peripherals supported by Core i5-8420 and Ryzen 5 8640U.
| PCIe version | 3.0 | 4.0 |
| PCI Express lanes | no data | 20 |
Pros & cons summary
| Integrated graphics card | 3.09 | 14.97 |
| Recency | 1 September 2018 | 6 December 2023 |
| Threads | 6 | 12 |
| Chip lithography | 14 nm | 4 nm |
| Power consumption (TDP) | 65 Watt | 28 Watt |
Ryzen 5 8640U has 384.5% faster integrated GPU, an age advantage of 5 years, 100% more threads, a 250% more advanced lithography process, and 132.1% lower power consumption.
We couldn't decide between Core i5-8420 and Ryzen 5 8640U. We've got no test results to judge.
Note that Core i5-8420 is a desktop processor while Ryzen 5 8640U is a notebook one.
Should you still have questions on choice between Core i5-8420 and Ryzen 5 8640U, 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.
