In general, this is how the line-up looks like:

When compared to 3-year old processors (that means 7th Gen Core CPUs) which Intel believe old enough to be replaced by these Comet Lake-H chips, they deliver up to 44% improvements in terms of overall performance.For gaming, the new processors apparently able to deliver up to 54% more FPS and speed up 4K video rendering as well as export speed up to two times faster. To further drive its point, Intel has released these charts as references:

Intel didn’t provide us with comparison figures against last year’s 9th Gen Core H-series processors but the company did say that overall performance gain could be as high as 20%. As for availability, manufacturers will begin to accept pre-orders for laptops with 10th Gen Intel Core H-Series processors starting from today while they should appear at retail stores from mid-April onwards. Stay tuned, as we going to discuss about these new laptops very soon.

10th Gen Intel Core H Series Mobile Processors Are Now Official  With Speed Up To 5 3GHz - 610th Gen Intel Core H Series Mobile Processors Are Now Official  With Speed Up To 5 3GHz - 910th Gen Intel Core H Series Mobile Processors Are Now Official  With Speed Up To 5 3GHz - 75