https://www.notebookcheck.net/Lenovo-ThinkPad-X1-Carbon-2017-Core-i7-Full-HD-Laptop-Review.207160.0.html https://www.notebookcheck.net/Lenovo-ThinkPad-X1-Carbon

https://www.notebookcheck.net/Lenovo-ThinkPad-X1-Carbon-2017-Core-i7-Full-HD-Laptop-Review.207160.0.html https://www.notebookcheck.net/Lenovo-ThinkPad-X1-Carbon-2017... https://www.notebookcheck.net/Lenovo-ThinkPad-X1-Carbon-2017-Core-i5-Full-HD-Laptop-Review.229966.0.html https://www.notebookcheck.net/Lenovo-ThinkPad-X1-Carbon-2017... Performance section: "The comparison of the two Lenovo ThinkPad X1 Carbon 2017 devices shows that the Intel Core i5-7200U can keep up very well with the Intel Core i7-7500U during continuous load. The reason can be found quickly, since the temperature goal of the Core i7 is already reached after a few seconds, so that the performance has to be throttled considerably. Thus the advantage of the supposedly much faster processor drops to a minimum"