AMD just got finished off showing off some of the basics about its EPYC datacenter processor. It is based on the Zen architecture goodness, and is in a nutshull, four Ryzen CPUs on a single package for server. So you get 32 Cores under one integrated heat spreader with support for 4TB of memory and 128 native PCIe lanes.
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Source: [H]ardOCP – AMD Shows of Epyc Datacenter CPU