Ryzen 7 7840U vs A4-5145M
Primary details
Comparing A4-5145M and Ryzen 7 7840U processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | not rated | 435 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Laptop |
| Series | AMD A-Series | AMD Phoenix (Zen 4, Ryzen 7040) |
| Power efficiency | no data | 53.06 |
| Architecture codename | Richland (2013−2014) | Phoenix-U (Zen 4) (2023) |
| Release date | 1 June 2013 (11 years ago) | May 2023 (1 year ago) |
Detailed specifications
A4-5145M and Ryzen 7 7840U 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 | 2 (Dual-core) | 8 (Octa-Core) |
| Threads | 2 | 16 |
| Base clock speed | 2 GHz | 3.3 GHz |
| Boost clock speed | 2.6 GHz | 5.1 GHz |
| L1 cache | 128 KB (per core) | 64K (per core) |
| L2 cache | 512K (per core) | 1 MB (per core) |
| L3 cache | 0 KB | 16 MB (shared) |
| Chip lithography | 32 nm | 4 nm |
| Die size | 246 mm2 | 178 mm2 |
| Maximum core temperature | no data | 100 °C |
| Maximum case temperature (TCase) | 71 °C | no data |
| Number of transistors | 1,178 million | 25,000 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | + |
Compatibility
Information on A4-5145M and Ryzen 7 7840U 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 | FP2 | FP8 |
| Power consumption (TDP) | 17 Watt | 28 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by A4-5145M and Ryzen 7 7840U. You'll probably need this information if you require some particular technology.
| Instruction set extensions | 86x SSE (1, 2, 3, 3S, 4.1, 4.2, 4A),-64, AES, AVX, FMA | no data |
| AES-NI | + | + |
| FMA | + | - |
| AVX | + | + |
| Precision Boost 2 | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by A4-5145M and Ryzen 7 7840U are enumerated here.
| AMD-V | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by A4-5145M and Ryzen 7 7840U. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | DDR5-5600 |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card Compare | AMD Radeon HD 8310G (424 - 554 MHz) | AMD Radeon 780M ( - 2700 MHz) |
Peripherals
Specifications and connection of peripherals supported by A4-5145M and Ryzen 7 7840U.
| PCIe version | no data | 4.0 |
| PCI Express lanes | no data | 20 |
Pros & cons summary
| Physical cores | 2 | 8 |
| Threads | 2 | 16 |
| Chip lithography | 32 nm | 4 nm |
| Power consumption (TDP) | 17 Watt | 28 Watt |
A4-5145M has 64.7% lower power consumption.
Ryzen 7 7840U, on the other hand, has 300% more physical cores and 700% more threads, and a 700% more advanced lithography process.
We couldn't decide between A4-5145M and Ryzen 7 7840U. We've got no test results to judge.
Should you still have questions on choice between A4-5145M and Ryzen 7 7840U, ask them in Comments section, and we shall answer.
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