A8-3870K vs Core i5-5300U comparison
According to the hardwareDB Benchmark tool, the Core i5-5300U is faster than the A8-3870K. Furthermore, our gaming benchmark shows that it also outperforms the A8-3870K in all gaming tests too.
In terms of the number of cores of each of these CPUs, the A8-3870K has significantly more cores than the Core i5-5300U. Indeed, the A8-3870K has 4 cores compared to 2 cores found in the Core i5-5300U. But they both have the same number of threads. The Core i5-5300U outputs less heat than A8-3870K thanks to a significantly lower TDP. This measures the amount of heat they output and can be used to estimate power consumption.
Most CPUs have more threads than cores. This technology, colloquially called hyperthreading, improves performance by splitting a core into multiple virtual ones. This provides more efficient utilisation of a core. For instance, the A8-3870K has the same number of threads as cores. This means the the CPU does not support hyperthreading.