Why Kaby Lake and Zen is Windows 10 only
Microsoft raised a few eyebrows when it announced that only Windows 10 will support Intelís and AMDís next-generation processor microarchitectures Ė codenamed Kaby Lake and Zen.
It appears that there are a few features on Kaby Lake and Zen that require significant updates to Windows 10 to optimally function.
Kaby Lake uses Intelís Speed Shift technology that make it possible to change power states more quickly than Skylake. Because Kaby Lake can make Speed Shift transitions faster, 7th Gen Core processors based on the architecture can increase and decrease clocks quickly. Speed Shift is hardware enabled but it uses the OS to function properly.
Intelís Turbo Boost Technology 3.0 with Turbo Boost Max 3.0 technology improves single-thread performance by identifying the fastest core on a particular processor die and prioritising critical workloads for that core. This pushes up the processorís frequency when needed and workloads are also directed to the fastest possible core available. Support for that technology needs to be in the operating system.
AMDís Zen-based processors have fine-grained clock gating with multi-level regions throughout the chip. Zen will bring in newer Simultaneous Multi-Threading technology for AMD chips. Microsoft will have to make updates to the Windows kernel and system scheduler, which is more involved than a driver update. Vole did something similar to add proper support for Bulldozer-based processors with Windows 7.
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