Core i9-9900K vs Core i5-12500H specs and performance
Our benchmark analysis concludes that the Core i9-9900K performs better than the Core i5-12500H. Despite this, the Core i5-12500H has the advantage in our gaming benchmark.
In terms of the number of cores of each of these CPUs, the Core i5-12500H has significantly more cores than the Core i9-9900K. Indeed, the Core i5-12500H has 12 cores compared to 8 cores found in the Core i9-9900K. But they both have the same number of threads. These CPUs have different clock speeds. Indeed, the Core i9-9900K has a significantly higher clock speed compared to the Core i5-12500H. Also, the Core i9-9900K has a slightly higher turbo speed. The Core i5-12500H outputs less heat than Core i9-9900K 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 i5-12500H has significantly more L2 cache than the Core i9-9900K. The Core i5-12500H also has slightly 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. Indeed, the Core i9-9900K has more threads than cores. Each physical core is split into multiple threads.
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