AMD Ryzen 9 3900X vs Intel Core i7-8665U

Ryzen 9 3900X vs Core i7-8665U comparison

Our benchmark analysis concludes that the Ryzen 9 3900X performs better than the Core i7-8665U. Furthermore, our gaming benchmark shows that it also outperforms the Core i7-8665U in all gaming tests too.

With info from our database, we find that the Ryzen 9 3900X has significantly more cores with 12 cores whereas the Core i7-8665U has 4 cores. It also has more threads than the Core i7-8665U. These CPUs have different clock speeds. Indeed, the Ryzen 9 3900X has a significantly higher clock speed compared to the Core i7-8665U. Despite this, the Core i7-8665U has a slightly higher turbo speed. The Core i7-8665U outputs less heat than Ryzen 9 3900X thanks to a 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. Indeed, the Ryzen 9 3900X has more threads than cores. Each physical core is split into multiple threads.