Intel Core i5-8259U vs Intel Core i5-2500K

Core i5-8259U vs Core i5-2500K comparison

In our benchmarks, the Core i5-8259U beats the Core i5-2500K in overall performance. Despite this, the Core i5-2500K has the advantage in our gaming benchmark.

Our spec comparison shows that they have an identical amount of cores but the Core i5-8259U has more threads. These CPUs have different clock speeds. Indeed, the Core i5-2500K has a significantly higher clock speed compared to the Core i5-8259U. Despite this, the Core i5-8259U has a slightly higher turbo speed. A Core i5-8259U CPU outputs less heat than a Core i5-2500K CPU because of its 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. Indeed, the Core i5-8259U has more threads than cores. Each physical core is split into multiple threads.