Windows 8.1 subclass of Windows
Find the relation between <e1>Windows 8.1<\e1> and <e2>Windows<\e2>.
Skylake is the codename used by Intel for a processor microarchitecture that was launched in August 2015 succeeding the Broadwell microarchitecture. Skylake is a microarchitecture redesign using the same 14   nm manufacturing process technology as its predecessor, serving as a " tock " in Intel's " tick - tock " manufacturing and design model. According to Intel, the redesign brings greater CPU and GPU performance and reduced power consumption. Skylake CPUs share its microarchitecture with Kaby Lake, Coffee Lake and Cannon Lake CPUs. Skylake is the last Intel platform on which Windows earlier than Windows 10 will be officially supported by Microsoft, although enthusiast - created modifications exist that allow Windows 8.1 and earlier to continue to receive updates on later platforms. Some of the processors based on the Skylake microarchitecture are marketed as " 6th - generation Core ". On October 8, 2018, Intel announced new 9th gen Core X 98xx/99xx series CPUs, with the Core i9 - 9980XE Extreme Edition leading the launch. 
Windows 8.1 Windows