AMD Ryzen 9 5900X vs Intel Core i5-8400

Ryzen 9 5900X vs Core i5-8400 benchmarks

According to the hardwareDB Benchmark tool, the Ryzen 9 5900X is faster than the Core i5-8400. Furthermore, our gaming benchmark shows that it also outperforms the Core i5-8400 in all gaming tests too.

In terms of the number of cores of each of these CPUs, the Ryzen 9 5900X has significantly more cores than the Core i5-8400. Indeed, the Ryzen 9 5900X has 12 cores compared to 6 cores found in the Core i5-8400. It also has more threads than the Core i5-8400. These CPUs have different clock speeds. Indeed, the Ryzen 9 5900X has a slightly higher clock speed compared to the Core i5-8400. Also, the Ryzen 9 5900X has a slightly higher turbo speed. The Core i5-8400 outputs less heat than Ryzen 9 5900X thanks to a significantly lower TDP. This measures the amount of heat they output and can be used to estimate power consumption. In terms of cache, the Ryzen 9 5900X has significantly more L2 cache when compared to the Core i5-8400. The Ryzen 9 5900X 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 5900X has more threads than cores. Each physical core is split into multiple threads.