Gigabyte implements dual UEFI BIOSes on all Z87 boards. The initial splash screen is navigable by mouse and keyboard though, for us, the mouse sensitivity is way too high - it's often a little difficult to select a submenu with consistent accuracy.
The look and feel are unlike any Gigabyte BIOS we've seen before... with good reason, as it's a grounds-up design, and not merely an overhaul of the versions found on Z77 chipset-based boards.
There are options for almost every facet of performance, and if we didn't know better, it seems like a BIOS designed for an enthusiast board, rather than a mainstream offering. Gigabyte does make it simple to move to various parameters by enabling user-defined keyboard shortcuts and screens where a whole host of favourite options can be grouped together. Taken as a whole, the BIOS represents the most impressive collection of settings we've seen from Gigabyte to date.
The current (live) options are shown on the left- and right-hand side of the window in the fully-fledged view, though a reduced-information version is also available. Gigabyte has a robust fan-control system available through a Windows GUI, complete with impressively-granular fan-speed profiles, but the pre-OS BIOS version is more basic. For example, fan-speed can only be set to what's known as a slope (percentage) of maximum. The second and third fan headers share the same settings and cannot be set individually, at least not here.
Those who are more familiar with traditional-looking BIOSes simply need to press F2. This brings up the settings in clearer fashion (for the dyed-in-the-wool enthusiast). Voltage regulation is excellent, especially for a mid-range board, and we have no real hang-ups with how Gigabyte has implemented it here.
The BIOS further conforms with Windows Fast Boost and enabling it allows us to load Windows 8, from a cold start and with an SSD, in under 10 seconds; nice!