Ryzen 3 5400U vs A8-3870K
Aggregate performance score
Ryzen 3 5400U outperforms A8-3870K by a whopping 374% based on our aggregate benchmark results.
Primary details
Comparing A8-3870K and Ryzen 3 5400U processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 2175 | 1014 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Desktop processor | Laptop |
| Series | no data | AMD Cezanne (Zen 3, Ryzen 5000) |
| Power efficiency | 1.39 | 43.95 |
| Architecture codename | Llano (2011−2012) | Cezanne-U (Zen 3) (2021) |
| Release date | 20 December 2011 (13 years ago) | 12 January 2021 (3 years ago) |
Detailed specifications
A8-3870K and Ryzen 3 5400U 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 | 4 (Quad-Core) | 4 (Quad-Core) |
| Threads | 4 | 8 |
| Base clock speed | 3 GHz | 2.6 GHz |
| Boost clock speed | 3 GHz | 4 GHz |
| Multiplier | no data | 26 |
| L1 cache | 128 KB (per core) | 64K (per core) |
| L2 cache | 1 MB (per core) | 512K (per core) |
| L3 cache | 0 KB | 8 MB (shared) |
| Chip lithography | 32 nm | 7 nm |
| Die size | 228 mm2 | 180 mm2 |
| Maximum core temperature | no data | 105 °C |
| Number of transistors | 1,178 million | 10,700 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | + |
| Unlocked multiplier | + | - |
Compatibility
Information on A8-3870K and Ryzen 3 5400U 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 | FM1 | FP6 |
| Power consumption (TDP) | 100 Watt | 15 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by A8-3870K and Ryzen 3 5400U. You'll probably need this information if you require some particular technology.
| Instruction set extensions | no data | MMX, SSE, SSE2, SSE3, SSSE3, SSE4A, SSE4.1, SSE4.2, AVX, AVX2, BMI2, ABM, FMA, ADX, SMEP, SMAP, SMT, CPB, AES-NI, RDRAND, RDSEED, SHA, SME |
| AES-NI | - | + |
| FMA | - | + |
| AVX | - | + |
Virtualization technologies
Virtual machine speed-up technologies supported by A8-3870K and Ryzen 3 5400U are enumerated here.
| AMD-V | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by A8-3870K and Ryzen 3 5400U. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | DDR4 |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card Compare | AMD Radeon HD 6550D | AMD Radeon RX Vega 6 (Ryzen 4000/5000) ( - 1600 MHz) |
Peripherals
Specifications and connection of peripherals supported by A8-3870K and Ryzen 3 5400U.
| PCIe version | no data | 3.0 |
| PCI Express lanes | no data | 8 |
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 | 1.47 | 6.97 |
| Integrated graphics card | 1.04 | 6.04 |
| Recency | 20 December 2011 | 12 January 2021 |
| Threads | 4 | 8 |
| Chip lithography | 32 nm | 7 nm |
| Power consumption (TDP) | 100 Watt | 15 Watt |
Ryzen 3 5400U has a 374.1% higher aggregate performance score, 480.8% faster integrated GPU, an age advantage of 9 years, 100% more threads, a 357.1% more advanced lithography process, and 566.7% lower power consumption.
The Ryzen 3 5400U is our recommended choice as it beats the A8-3870K in performance tests.
Note that A8-3870K is a desktop processor while Ryzen 3 5400U is a notebook one.
Should you still have questions on choice between A8-3870K and Ryzen 3 5400U, 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.
