Even current macs use EFI 1.1. UEFI 2.3 is the current version of the standard, and as yet no macs are even using 2.0 to my knowledge. That said, there is a hu

Even current macs use EFI 1.1. UEFI 2.3 is the current version of the standard, and as yet no macs are even using 2.0 to my knowledge. That said, there is a huge difference between any version of EFI and BIOS boot times. But keep in mind, we are not talking about the time to boot the OS, but the time it takes for the OS to start booting. Think all the time wasted in your typical BIOS-based boot on hardware checks, post screens, etc.