CrystalDiskMark is a useful benchmark to measure theoretical performance levels of hard drives and SSD’s. We are using V3.0.3 but will be switching to v6.0 shortly so we have added the two CrystalDiskMark 6 result screenshots.
The 3D TLC NAND equipped 512GB M9Pe(Y) isn't quite as fast as the previous generation MLC equipped M8PeG but there's not a lot in it in terms of read performance, although the gap is bigger in terms of writes. Even so it's still a quick drive.