"The SAPPHIRE HD 7730 UEFI edition/UEFI ready products are compatible with motherboards that comply with UEFI Specification 2.3.1 or after. It is also compatible with motherboards that do not have UEFI feature. Motherboards that contain earlier version of UEFI must be updated to the latest version or have the UEFI option turned off, otherwise, the graphics card will boot in legacy mode, or in some cases, not boot at all. Please refer to your motherboard userguide for BIOS update instruction."
Donc oui la carte est fonctionnelle même avec une CM non UEFI