not actually sure this has ever been tested! there was no software on the iMac, nor any files.
this particular model was on a recall …but only if there was a fault.
apple tested each one that came back and if there was no fault they could find the card was not replaced.
I don’t know the history of this particular unit has anyone actually tried it and had the fault occur? or did we just see that this particular model was on the recall list and assume it was faulty?
I have put the graphics card through 2 torture tests furmark and benchmark valley.