Ryzen 9 3900X vs Ryzen 7 5800X specs and performance
According to the hardwareDB Benchmark tool, the Ryzen 9 3900X is faster than the Ryzen 7 5800X. Despite this, the Ryzen 7 5800X has the advantage in our gaming benchmark.
When comparing core counts for these CPUs, we notice that the Ryzen 9 3900X has significantly more cores with 12 cores compared to the Ryzen 7 5800X that has 8 cores. It also has more threads than the Ryzen 7 5800X. Our comparison shows that the Ryzen 9 3900X has a slightly higher clock speed compared to the Ryzen 7 5800X. Despite this, the Ryzen 7 5800X has a slightly higher turbo speed. Both these chips have an identical TDP (Thermal Design Power). 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 Ryzen 7 5800X. 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.