Benchmark: AS SSD
AS SSD is another benchmark that uses incompressible data, and the impact is clear to see in the screenshot above; sequential write performance drops from 529MB/s in ATTO to 290MB/s in this benchmark.
Working with pre-compressed data isn't the 520 Series SSD's strong point, but the drive is very competent at dealing with a plethora of small files, as evidenced by the good 4K-64Thrd results and overall score.