Ryzen 9 9900X vs Core Ultra 7 255HX specs and performance
Our benchmark analysis concludes that the Core Ultra 7 255HX performs better than the Ryzen 9 9900X. Furthermore, our gaming benchmark shows that it also outperforms the Ryzen 9 9900X in all gaming tests too.
When comparing core counts for these CPUs, we notice that the Core Ultra 7 255HX has significantly more cores with 20 cores compared to the Ryzen 9 9900X that has 12 cores. Despite this, the Ryzen 9 9900X has more threads than the Core Ultra 7 255HX. With our hardware info, we find that the Ryzen 9 9900X has a significantly higher clock speed than the Core Ultra 7 255HX. Also, the Ryzen 9 9900X has a slightly higher turbo speed. The cache sizes of these CPUs are different. Indeed, the Core Ultra 7 255HX has significantly more L2 cache than the Ryzen 9 9900X. Despite this, the Ryzen 9 9900X has significantly more L3 cache compared to the Core Ultra 7 255HX.
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 9900X has more threads than cores. Each physical core is split into multiple threads.
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