The mine is doing well so far, some old riserless motherboards that I inherited as well are starting to burn out as well (pcie slots not working) so I'm slowly been replacing those since the hardware is still cheap at this point.

the HP/Dell server PSUs work very well and havent had any issues with those.

96 out of the 100 cards are online, the 4 damaged ones basically just saved the GPU fans from those.