From the golden age of crypto mining (late 2017) : r/gpumining
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) :
From HD7850 2GB to RX470 4GB! (I know it´s a modest upgrade but after being stuck with the trusty Pitcairn during the mining GPU shortage I am glad to have cheaply upgraded to something a little newer to fill my casual gamer´s needs. ) : r/Amd
AMD Radeon HD 7850 Launch Recap
10 YEARS OLD - AMD RADEON HD7850 2GB - 2022 Game Tests - YouTube
PowerColor Radeon HD 7850 SCS3 1GB Passive Video Card Review - Legit Reviews