It's crazy fast and looks better on a Mac than on a Dell or HP. It makes Yosemite and El Cap look plain and dull.
OSX El Cap/Yosemite boot in 11 seconds on SATA3.
Win10 boots in 9 seconds on SATA2.
Apple really needs to integrate Siri and make the Dock more modern, not just an app launcher. On the surface OSX still operates like the year is 2001 despite all the improvements under the hood.
From what I understand, (please could somebody correct me if I'm wrong), the quick boot speed that also came from Windows 8 is because Windows goes into an extended hibernate-type mode when shutting down, rather than
completely shutting down as Windows 7 did. Occasionally this caused issues wherein the CPU uptime in Task Manager would show to be a number of days even when having just shut down. This can be resolved by disabling fast boot in
powercfg.cpl >choose what the power button does
> change settings that are currently unavailable.
I'd be interested to see if there's a similar sort of thing in Windows 10 to cause the quick boot.
I've also heard that Windows 10 utilises more RAM than Windows 8. This is hopefully a good sign, as the main cause in my experienc
e for slow performance on Windows 8 is simply 100% disk usage - the curse of not having an SSD. If Windows 10 uses more RAM to prevent writing to disk as much then this'll also have a very positive impact on the speed of the OS.
Overall I'm very impressed with Windows 10, and although I personally prefer OS X for many reasons, they're really bridging the gap in performance. There's now comparatively very little reason for a new computer user to pay the Apple premium.