PS: After PCIE NVME Drive if you also add a PCIE USB3 adapter, Your Dell Precision T3500 becomes at par with any modern system.
One last question ... what would the difference in speed be between NVME on a PCI express x4 2.0 compared with an SSD running off SATA 2? Still on the fence on if I should go with the NVME setup or just get an SSD for my T3500.