new gpu with old legacy bios mb

Hello. So as the title says. I wonder if the 1000 series works on my motherboard (ms-7525 with lga 775). All I worried about is legacy bios. The graphics card I'm currency using is GT 1030 DDR4 2GB OC (ya i know this one is very bad). I want to upgrade from that gpu to something like...

I have old but still power full pc with following configuration: MB: Asus Rampage II Gene CPU: Intel Core i7 920 RAM: Corsair XMS DDRIII 1600 3x4GB VGA: Sapphire Radeon HD 5870 1GB HDD: RAID0 3x1TB Seagate Barracuda 7200.12 Power: 780W Real Case: Full ATX Gaming (that new GPU fits easily. I...