Intel Core i9-9980HK vs Intel Core i5-1235U

Core i9-9980HK vs Core i5-1235U comparison

In our benchmarks, the Core i9-9980HK beats the Core i5-1235U in overall performance. Despite this, the Core i5-1235U has the advantage in our gaming benchmark.

In terms of the number of cores of each of these CPUs, the Core i5-1235U has slightly more cores than the Core i9-9980HK. Indeed, the Core i5-1235U has 10 cores compared to 8 cores found in the Core i9-9980HK. Despite this, the Core i9-9980HK has more threads than the Core i5-1235U. Our comparison shows that the Core i9-9980HK has a significantly higher clock speed compared to the Core i5-1235U. Also, the Core i9-9980HK has a slightly higher turbo speed. The Core i5-1235U outputs less heat than Core i9-9980HK thanks to a significantly lower TDP. This measures the amount of heat they output and can be used to estimate power consumption. The cache sizes of these CPUs are different. Indeed, the Core i5-1235U has slightly more L2 cache than the Core i9-9980HK. Despite this, the Core i9-9980HK has slightly more L3 cache compared to the Core i5-1235U.

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 i9-9980HK has more threads than cores. Each physical core is split into multiple threads.