It's four years old. When the i7 920 first launched, no motherboard, no matter how much it costs had UEFI BIOS.
As of the motherboard, well it's just like that. The case has a unique ATX layout, it has a 90 degree rotated configuration which only Silverstone does it.
Yeah they did. Mac's did, Since 2006, they used EFI(Intel Standard)
This made them able to boot Windows as well.