Intel's Kaby Lake-X CPUs are officially obsolete, as the company discontinued the Core i5-7640X and Core i7-7740X.

Launched alongside the multi-core Skylake-X processors last summer, the Kaby Lake-X quad-core chips didn't offer any noticeable advantages over standard Kaby Lake chips beyond a very slight speed bump. Yet they required pricey X299 motherboards.

Intel advertised the CPUs as an overclocker's dream.