http://wccftech.com/amd-launches-ryzen-threadripper-1900x-8-core-processor-with-64-pcie-lanes/

More PCIe lanes, bootable NVMe RAID and more USB ports are some of the advantages the 1900X enjoys over the 1800X.

AMD recently launched the Threadripper 1900X CPU which rocks 8 cores and 16 threads. At the same time the company has also launched the Ryzen Pro processors for OEMs. The Threadripper 1900X has 8 cores and 64 PCIe lanes with support for up to 7 devices simultaneously over PCIe. The processor has the same core count as the Ryzen 1800X processor but the higher lane count and its role as an upgrade path makes it a good buy for people planning to eventually get any of its bigger siblings.