Mine just arrived (2 hours ago). Mobile Precision7510 with 64GB, DDR4-2133MHz on Win 8.1pro 64-bit (having an IT background, I use "Classic Start" for a Win-7 interface). 512GB M.2 PCIe NVMe High Performance SSSD plus a 2TB SATA 2nd drive. i7-6820HQ cpu & Quadro M1000M gpu. 6-cell (91Wh) LiIo...