Hardly new stuff. We had horrible problems in production 10 years ago. After analyzing the situation, we found out that the new servers had same memory as older

Hardly new stuff. We had horrible problems in production 10 years ago. After analyzing the situation, we found out that the new servers had same memory as older ones from Kingston. But when you watched closely, you noticed that even if the Kingston label with all type information was exactly the same, the chips on the DIMM weren't. So no new news here. If you work in the IT department, you'll also probably know, that when ordering 300 "similar" computers: Changes are quite low that you're really getting those delivered. After going through the delivery, it's quite likely that you got at least 10 different computer series in that delivery. Different power source, different memory, possibly different motherboard, hard drive, power source cooling fan, cpu cooler etc. That's just normal unfortunately. That's why many supplier leave the specification quite open on purpose, so it doesn't matter what they deliver as long as it's something meeting the specification.