> Are there any reliability issues with used mining cards? Yes. Specifically, voltage regulators tend - for some reason I am not familar with - wear out and d

> Are there any reliability issues with used mining cards? Yes. Specifically, voltage regulators tend - for some reason I am not familar with - wear out and die. I'd be very careful when buying a second-hand GPU that was used for mining. > Would applying new thermal paste + replacing fans on the cooler be enough? Doubtful.