Ryzen 9 9900X vs Core Ultra 9 275HX specs and performance
In our benchmarks, the Ryzen 9 9900X beats the Core Ultra 9 275HX in overall performance. Despite this, the Core Ultra 9 275HX has the advantage in our gaming benchmark.
In terms of the number of cores of each of these CPUs, the Core Ultra 9 275HX has significantly more cores than the Ryzen 9 9900X. Indeed, the Core Ultra 9 275HX has 24 cores compared to 12 cores found in the Ryzen 9 9900X. But they both have the same number of threads. Our comparison shows that the Ryzen 9 9900X has a significantly higher clock speed compared to the Core Ultra 9 275HX. The cache sizes of these CPUs are different. Indeed, the Core Ultra 9 275HX 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 9 275HX.
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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