i7 vs i9 - What's the Difference?

With the latest generation architecture, Intel introduced a Core i9. So how has Intel differentiated i7 vs i9? What features does i9 have that i7 doesn’t?

Intel Core i7 vs Core i9: What's the Difference?

CPU Processor Comparison – Intel Core i9 vs i7 vs i5 vs i3

Comparision between Core i3,i5,i7,i9

Intel Core I3 Vs I5 Vs I7 Vs I9: What's The Difference?, 42% OFF

Intel Core i7 vs i9 For Gaming – Which Should I Choose? [Simple]

Intel Core i3 vs i5 vs i7 vs i9: What's The Difference?

How does the intel i9 series compare to i7s? - Quora

Intel Core i7 vs. Core i9: What's the Difference?

Core-i7 13700K vs Core-i9 12900K: Newer or older? - PC Guide