PCI-Express Gen 4.0 NVMe solid state drives keep on getting more and more popular.  With AMD's Ryzen 5000 series processors and X570 motherboards and Intel's upcoming Rocket Lake-S processors and Z590 motherboards both Intel and AMD will now offer Gen4 M.2 speeds.  So if you were thinking about upgrading or building a new system a Gen 4 NVMe solid state drives is more than likely on your list.  Today we will be taking a look at Patriot's Viper VP4100 drive which is based of the Phison E16 controller and Toshiba 96-layer 3D TLC NAND, offering read and write speeds of 5000 MB/s and 4400 MB/s respectively.  Is this the Gen4 drive for you? Read on as we find out!