What this article means by "incompatible" is that the two chips are not interchangeable. That's because they have different physical connections. By saying the

What this article means by "incompatible" is that the two chips are not interchangeable. That's because they have different physical connections. By saying they are incompatible the article implies that they could never be used in the same server but I don't see any evidence for that. You'd just need the server to have both types of socket.