Intel Core i5-11400 vs Intel Core i9-9900KF

Core i5-11400 vs Core i9-9900KF comparison

In our benchmarks, the Core i9-9900KF beats the Core i5-11400 in overall performance. Despite this, the Core i5-11400 has the advantage in our gaming benchmark.

With info from our database, we find that the Core i9-9900KF has slightly more cores with 8 cores whereas the Core i5-11400 has 6 cores. It also has more threads than the Core i5-11400. In terms of clock speed, the Core i5-11400 and Core i9-9900KF are identical in this regard. Despite this, the Core i9-9900KF has a slightly higher turbo speed. A Core i5-11400 CPU outputs less heat than a Core i9-9900KF CPU because of its 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 i5-11400 has significantly more L2 cache than the Core i9-9900KF. Despite this, the Core i9-9900KF has slightly more L3 cache compared to the Core i5-11400.

Modern CPUs generally have more logical cores than physical cores, this means that each core is split into multiple virtual cores, improving efficiency for parallel workloads. Indeed, the Core i5-11400 has more threads than cores. Each physical core is split into multiple threads.