It is very low number of HW Errors, it is under one per day.
I normally have few in a hour, but I admit I trying mine most of the card because the card has still a warranty

Oh good, so it should be nothing to worry about?
My last catastrophe involved over a hundred HW's per day, and the system would eventually crash to bios whenever any load was applied to it.
Pink lines all over the screen, luckily they approved my RMA and got a new one that isn't having any issues. (Got lucky too, fan blade broke by accident!)