PCIe Gen4 SSDs are changing the performance storage landscape quickly via AMD's extremely popular Zen II platform. Seagate has decided to enter the fray with its first Gen4 M.2 SSD. Seagate's Gen4 SSD is designated as the FireCuda 520 Series. Seagate's FireCuda 520 Series is the next progression of their FireCuda SSD line of products and is available for order starting right now at three capacity points, 500GB, 1000GB, and 2,000GB. We've had several Gen4 SSDs come through the lab recently, and they all have one thing in common; they are powered by Phison's potent E16 PCIe Gen4 SSD controller and Toshiba BiCS 4 96-layer flash. Seagate's FireCuda 520 Series is no different in that respect. However, Seagate differs from what we've seen to this point in a few ways.