Today were taking a look at ADATAs XPG Gammix S50 Lite, a mid-range consumer NVMe SSD based on Silicon Motions new SM2267 controller. Among other notable features, the Gammix S50 Lite is the first mainstream-focused SSD that supports PCIe 4.0 – though as well see in our benchmarks that support is largely incidental, as the drives performance is mostly the same as high-end Gen3 SSDs.