Silicon Power UD90 4TB NVMe SSD vs Samsung 990 EVO Plus 4TB

The Samsung 990 EVO Plus 4TB is the faster, more polished drive: up to 7,250 MB/s read and 6,300 MB/s write, TLC NAND, a 2,400 TBW endurance rating and Samsung's Magician software. The Silicon Power UD90 4TB is a DRAM-less, HMB-based Gen4 drive rated around 5,000/4,800 MB/s that runs cooler and suits laptops and budget builds. Owners of the 990 EVO Plus call it fast and reliable, with a few reports of crashes and one complaint about cost; the UD90 is the value pick that still beats SATA and Gen3 drives. Buy the Samsung for sustained heavy writes and long-term peace of mind, the UD90 for light everyday use where cost and heat matter more than peak speed.

• Choose the Silicon Power UD90 if you want a cool-running Gen4 drive for a laptop or budget desktop and your workload is gaming, browsing and everyday file moves rather than sustained large writes.
• Choose the Samsung 990 EVO Plus if you edit video, move huge files often or want the fastest Gen4-class speeds, TLC NAND, high endurance and Samsung's software and support behind the drive.