AMD Ryzen 9 3900X vs Intel Core i7-6700K

Ryzen 9 3900X vs Core i7-6700K specs and performance

Our benchmark analysis concludes that the Ryzen 9 3900X performs better than the Core i7-6700K. Furthermore, our gaming benchmark shows that it also outperforms the Core i7-6700K in all gaming tests too.

When comparing core counts for these CPUs, we notice that the Ryzen 9 3900X has significantly more cores with 12 cores compared to the Core i7-6700K that has 4 cores. It also has more threads than the Core i7-6700K. These CPUs have different clock speeds. Indeed, the Core i7-6700K has a slightly higher clock speed compared to the Ryzen 9 3900X. Despite this, the Ryzen 9 3900X has a slightly higher turbo speed. The Core i7-6700K outputs less heat than Ryzen 9 3900X thanks to a slightly 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 Ryzen 9 3900X has significantly more L2 cache than the Core i7-6700K. The Ryzen 9 3900X also has significantly more L3 cache.

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 Ryzen 9 3900X has more threads than cores. Each physical core is split into multiple threads.