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AMD Ryzen 9 9900X and Ryzen 9 9950X review: mystifying performance


The Digital Foundry review of the AMD Ryzen 9 9900X and 9950X, with the test rig, content creation benchmarks and much more.

That's thanks to an increase in IPC (instructions per clock, an indicator of single-core grunt), while clockspeeds, power usage and thermals remain flat or slightly improved. These serve as synthetic benchmarks for gamers, suggesting certain levels of performance we might expect in a best-case scenario, and of course they can also be a useful indicator for people that actually intend to use a Ryzen 9000 CPU for 3D modelling or video production. Let's look at the Cinebench 2024 results first, which are recorded after a 10 minute plus loop to ensure CPUs aren't able to quickly knock in a good score before thermal or power limits kick in.

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