Intel Core i7-8700K vs Intel Core Ultra 7 155U

Core i7-8700K vs Core Ultra 7 155U comparison

In our benchmarks, the Core i7-8700K beats the Core Ultra 7 155U in overall performance. Furthermore, our gaming benchmark shows that it also outperforms the Core Ultra 7 155U in all gaming tests too.

When comparing core counts for these CPUs, we notice that the Core Ultra 7 155U has significantly more cores with 12 cores compared to the Core i7-8700K that has 6 cores. It also has more threads than the Core i7-8700K. With our hardware info, we find that the Core i7-8700K has a significantly higher clock speed than the Core Ultra 7 155U. Despite this, the Core Ultra 7 155U has a slightly higher turbo speed. The cache sizes of these CPUs are different. Indeed, the Core Ultra 7 155U has significantly more L2 cache than the Core i7-8700K. However, both these chips have the same amount of L3 cache.

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 i7-8700K has more threads than cores. Each physical core is split into multiple threads.