Perhaps you can't decide which processor to buy, you can make a choice by looking at the AMD EPYC 9254 Cinebench r20 score multi and single core test and decide how powerful is this processor, is it a good CPU or a bad one to buy. Here is useful information from Cinebench r20 benchmark. A thorough review of all the specifications, so that it can be easier to understand, is presented in the form of the table. After looking at the data this test and video, you already be able to understand do you need to buy AMD EPYC 9254 or not.
All the data in the text above do not mean that taking them into account you should totally trust a simple comparison of these numbers. Better to watch benchmarks video and read the reviews of real owners of AMD EPYC 9254 before deciding buy this CPU or not.