Amazon.com: Dual VGA Video Card Fan Set, Replacement Parts for AMD/ATI Dual-X, Sapphire HD 7850, 6930, FD7010H12S 0.35A, T128010SU 0.35A and etc. (4pin Power Cords and 40mm Mounting Holes Distance) (75mm Set) :
Gpu Rx 580 Rx 570 Cooler Sapphire Nitro Gear Led Fan For Rx580 Rx570 Card Cooling - Fans & Cooling - AliExpress
2PCS CF1015H12D 12V 0.42A 95MM RX 580 Nitro Mining Edition VGA Fan for Sapphire RX 470 480 570 580 590 Graphics Card Cooling Fan (2PCS Black)