Yes, but again, you may not get that alert and find out that memory module is bad until months from now. It all depends on where the chip is bad at, how much is

Yes, but again, you may not get that alert and find out that memory module is bad until months from now. It all depends on where the chip is bad at, how much is bad, how much load is usually on the system, etc. I (and I would guess most people) don't want to find out a month (or more, potentially much more) from now that the memory module is bad, I want to know now so I can RMA it and get it over with without having to take a running system down and apart. That's the problem that memtest solves, ECC does not solve the same problem at all.