AMD Ryzen 9 3900X vs Intel Core i7-9700K

Ryzen 9 3900X vs Core i7-9700K specs and performance

Our benchmark analysis concludes that the Ryzen 9 3900X performs better than the Core i7-9700K. Furthermore, our gaming benchmark shows that it also outperforms the Core i7-9700K in all gaming tests too.

In terms of the number of cores of each of these CPUs, the Ryzen 9 3900X has significantly more cores than the Core i7-9700K. Indeed, the Ryzen 9 3900X has 12 cores compared to 8 cores found in the Core i7-9700K. It also has more threads than the Core i7-9700K. Our comparison shows that the Ryzen 9 3900X has a slightly higher clock speed compared to the Core i7-9700K. Despite this, the Core i7-9700K has a slightly higher turbo speed. The Core i7-9700K 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 i7-9700K. The Ryzen 9 3900X 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. Indeed, the Ryzen 9 3900X has more threads than cores. Each physical core is split into multiple threads.