Intel Core i5-8400 vs Intel Core i7-3930K

Core i5-8400 vs Core i7-3930K comparison

Our benchmark analysis concludes that the Core i5-8400 performs better than the Core i7-3930K. Furthermore, our gaming benchmark shows that it also outperforms the Core i7-3930K in all gaming tests too.

Info from our database shows that they both have the same core count but the Core i7-3930K has more threads. These CPUs have different clock speeds. Indeed, the Core i7-3930K has a slightly higher clock speed compared to the Core i5-8400. Despite this, the Core i5-8400 has a slightly higher turbo speed. A Core i5-8400 CPU outputs less heat than a Core i7-3930K CPU because of its significantly lower TDP. This measures the amount of heat they output and can be used to estimate power consumption.

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. For instance, the Core i5-8400 has the same number of threads as cores. This means the the CPU does not support hyperthreading.