Intel Core i5-6600K vs Intel Core Ultra 7 255H

Core i5-6600K vs Core Ultra 7 255H specs and performance

Our benchmark analysis concludes that the Core Ultra 7 255H performs better than the Core i5-6600K. Despite this, the Core i5-6600K has the advantage in our gaming benchmark.

With info from our database, we find that the Core Ultra 7 255H has significantly more cores with 16 cores whereas the Core i5-6600K has 4 cores. It also has more threads than the Core i5-6600K. These CPUs have different clock speeds. Indeed, the Core i5-6600K has a significantly higher clock speed compared to the Core Ultra 7 255H. Despite this, the Core Ultra 7 255H has a slightly higher turbo speed. The cache sizes of these CPUs are different. Indeed, the Core Ultra 7 255H has significantly more L2 cache than the Core i5-6600K. The Core Ultra 7 255H also has significantly more 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. For instance, the Core i5-6600K has the same number of threads as cores. This means the the CPU does not support hyperthreading.