Suppose also that I happen to know that this PC is a dud. His suggestion is simple enough. This is run every year. It asks thousands of expert readers what machinery they own, how often it has broken down, and how the supplier responded. My own, instant, reaction, is that this would probably be grossly unfair to the manufacturers, because really, the absolute performance of the typical PC is pretty good.
Most people buy a machine, plonk it down, power it up, and forget about it.