Chinese PCIe 5.0 SSD boasts 14.9 GB/s speeds, positioning as the fastest mainstream PCIe 5.0 drive on the market from Latest from Tom's Hardware on 2025-03-29 17:40 (#6W8YH) UNIS, a Chinese manufacturer, has unveiled its S5 lineup of SSDs. It claims to hit 14.9 GB/s in sequential reads despite its DRAM-less design and old 12nm controller.