AMD Ryzen 9 7900X vs AMD Ryzen 9 7945HX

Ryzen 9 7900X vs Ryzen 9 7945HX benchmarks

In our benchmarks, the Ryzen 9 7945HX beats the Ryzen 9 7900X in overall performance. Despite this, the Ryzen 9 7900X has the advantage in our gaming benchmark.

When comparing core counts for these CPUs, we notice that the Ryzen 9 7945HX has slightly more cores with 16 cores compared to the Ryzen 9 7900X that has 12 cores. It also has more threads than the Ryzen 9 7900X. These CPUs have different clock speeds. Indeed, the Ryzen 9 7900X has a significantly higher clock speed compared to the Ryzen 9 7945HX. In terms of cache, the Ryzen 9 7945HX has slightly more L2 cache when compared to the Ryzen 9 7900X. However, both these chips have the same amount of 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 7900X has more threads than cores. Each physical core is split into multiple threads.