CrystalDiskMark is a useful benchmark to measure theoretical performance levels of hard drives and SSDs. We are using V6.0.0 x64.
SSD Performance
The 256GB SK Hynix SC308 M.2 drive only uses a SATA interface, but it's about as fast as we'd expect for a SSD using this connection type. The reading performance of 559.1MB/sec is five times slower than the fastest NVMe drives, and the read performance is less than half the write speed. Nevertheless, boot time and application loading shouldn't be too onerous.