The SSD for Surfaces has always been just OK, and that is the case here. The 256GB model yields 2,000MB/s for read, while writes were only at 800MB/s, far below the industry average. However, most people experience read performance, and there the Surface Pro 7 is closer to typical laptops. It's also an improvement over the Surface Pro 5 (847MB/s) and Surface Pro 6 (1,600 MB/s). It should be noted that due to the parallel nature of SSD storage, the 512GB and 1TB options are likely to improve those speeds too.