GPU cards sagging, CPU coolers sagging, motherboards warping, case cooling issues... they are all related to the same root cause: Putting the case in a vertical position on its "side" instead of horizontally which is how personal computers were conceived to work in the first place. The engineers of the 1970's and 1980's wisely allowed for such unforeseen explosive growth of components without having to look into the future; they simply applied clean and practical design principles. Then marketing went and screwed it all up and here we are.