Enterprise SSDs often (but not always) reserve more spare area out of the pool of flash on the drive, which helps a lot with sustained write speeds, especially

Enterprise SSDs often (but not always) reserve more spare area out of the pool of flash on the drive, which helps a lot with sustained write speeds, especially random writes; the garbage collector is under less pressure to free up erase blocks for new writes. Consumer SSDs use SLC caching which allows for much higher write speeds until that cache runs out, but then the drive is stuck with the job of cleaning up that cache while also still handling new writes. So for the same amount of raw NAND capacity and same usable capacity, an enterprise drive that doesn't do any SLC caching at all will tend to have a better long-term write speed than the post-cache write speed on a consumer drive.