作者jordanpchome

https://www.pcper.com/news/Processors/AMD-Outs-Threadripper-1900X-8-cores-549-Details-Availability-and-Preorders

As it turns out, AMD confirmed to us that only two of the dies on that substrate have working transistors on them and the other two are simply blank wafer pieces to help with the structural support of the heatspreader! In otherwords, there are two blank, worthess chunks of silicon on the part to keep the top from caving in. (Note that the two working dies are always going to be diagonal from each other.)