If you have difficulties with the choice of a processor, you will solve them by looking at full benchmark Intel Core i9-12900K Cinebench r20 score single and multi core and understand is it a good CPU or a bad one to buy, how powerful is this CPU. Here you can find useful information from Cinebench r20 benchmark. A careful review of all the technical characteristics, so that it can be easier to read, is presented in the form of the table. After reading the results this test and video, you already be able to understand do you need to buy Intel Core i9-12900K or not.
All the data in the text above do not mean that taking them into account you should entirely trust a simple quantitative comparison. Better to watch the video tests and read the opinion of of people who bought Intel Core i9-12900K before deciding buy this CPU or not.
Intel Core i9-12900K Cinebench r20 benchmark video