Looking at Wikipedia, there are BGA Xeons - a couple of new quad core, low power E3 models. However, all other Xeons are socketed, including the ones used in ea

Looking at Wikipedia, there are BGA Xeons - a couple of new quad core, low power E3 models. However, all other Xeons are socketed, including the ones used in earlier Mac Pros. And all the 6/8/12 core Xeons are using either LGA-1356 or LGA2011 sockets (not PGA, my bad)...