ASUS GPU UEFI 700 series question?

Mar 28, 2014
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Inquiry, do all the GTX 700 series ASUS GPUs have native UEFI support and bios? Because from what I know the 760 has it but for me its around $300+ whilst the ASUS GTX 750Ti is around $199ish, and I plan to use UEFI mostly on a Z97 sabertooth mark 2.

Also how specifically does the UEFI system work? Can I still use a legacy bios using a GTX 660 (Its what I have at the moment) and still use full UEFI or is there something special I need to use first (such as flashing the bios on a UEFI-using Asus mobo?)