We just reviewed the brand-new Dell XPS 15 9510 with Intel's Tiger Lake-H processor. The performance is not bad, but AMDs current Ryzen CPUs are just more efficient and would leave more headroom for more powerful GPUs.
https://www.notebookcheck.net/When-do-we-finally-get-the-Dell-XPS-15-with-AMD-Ryzen-CPUs.555564.0.html