What does the Cross-Platform Rating in a Price performance comparison page of a CPU on PassMark mean? What kind of performance does it reflect? It seems the kind of performance it reflects is more like what Average CPU Mark does, which is basically multi-core performance. If so, what is the difference between these 2 numbers?
More specifically in my case, I am comparing these 3 CPUs to decide which one to buy: AMD Ryzen 7 3800X vs AMD Ryzen 9 3900X vs AMD Ryzen 9 3950X. The CPU Mark of the 3900X is lower than 3/2 of that of the 3800X, while the Cross-Platform Rating of the 3900X is higher than 3/2 of that of the 3800X. I am going after multi-core performance, so I am wondering whether the 3900X gives me 3/2 of multi-core performance compared to the 3800X.