AMD Ryzen 9 9900X in a megatest of 40 CPUs

Memory and cache tests

We’re wrapping up tests of the new Ryzen 9000 desktop CPUs. This with a model that once increased the number of cores compared to its predecessor, or a pilot model (Ryzen 9 3900X) from eight to twelve on AMD’s mainstream platform. Even compared to the Ryzen 9 5900X, the new Ryzen 9 9900X is more than twice as fast in some practical situations. This model is also the best when it comes to efficiency.

Memory tests…




… and cache tests (L1, L2, L3)












Note: The L3 memory results, at least with our component configuration, could not be measured in AIDA64, the corresponding application windows remained empty. Tested with older versions as well as with the latest one (6.60.5900).


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Comments (2) Add comment

  1. I am wondering what is going on with certain tests where 9900x is inferior to 7900x. In particular, AIDA64 FPU Julia and Mandel. For instance, in Julia test 9900x only achieves 28% of 7900x’s performance…!? Does it have something to do with test versions (7900x was tested almost 2 years ago).

    This also makes me to ask if there is a way to tell which cases are actually comparable? Is it possible to select only the exact same versions?

    1. I assume that this is a consequence of non-optimization of the application (in this case Aida64) for given tests with specific processors, or rather their architectures.

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