We compare the processor performance between two different 15-inch laptops equipped with the same Intel 10th gen Core i7 Ice Lake CPU. At worst, we're able to record a performance advantage of almost 60 percent on the more expensive laptop model.
https://www.notebookcheck.net/700-Core-i7-1065G7-vs-1400-Core-i7-1065G7-What-s-the-difference.457523.0.html