You must prioritize the Interface Generation (PCIe 3.0 vs. 4.0 vs. 5.0) as it dictates maximum bandwidth. For high-performance workstations, PCIe 4.0 x4 is the current industry standard, offering speeds up to 7,500 MB/s. Additionally, verify the NAND Flash Type; TLC (Triple-Level Cell) is the preferred balance for enterprise reliability and cost, whereas QLC is cheaper but has lower endurance. Ensure the controller is from a reputable brand like SMI, Phison, or Marvell to guarantee firmware stability.