TechPowerUp posted a review on the Silicon Power UD90 1 TB M.2 NVMe SSD
A quote from the article:
Priced at $110, the Silicon Power UD90 is an affordable PCI-Express 4.0 M.2 NVMe SSD, offering transfer rates of up to 4.8 GB/s. Under the hood, the UD90 uses the new Phison E21 controller and Micron's 176-layer 3D TLC NAND.Silicon Power UD90 1 TB M.2 NVMe SSD Review