cheapest gpu to hackintosh

Hello, i have an H81M-C with a i5-4570, and te iGPU (intel 4600) does note support vga/dvi nor the mobo has hdmi port, so i need to buy a new one, i intend to instal Catalina e uptade it till i can't anymore, gt710 is good? radeon R5 is better?

list of cheap old used gpu i found around here:
Radeon R5 2Gb
GT710
GT210
any sugestions?

Author: @maarcoa