Most manuf use ATTO for their published specs so should get close to (± 10%).
That said ATTO is a poor choice for benchmarking an SSD as it uses highly compressable data - far from real life - in use performance for a OS + program drive. ATTO would be a good benchmark if the SSD is used as a storage drive and working with LARGE file types such as dvd VOB files (typically 1 gig), Bluray files (10->40 gigs), large spreadsheets, Large number of jpeg/bitmap photos (10+ meg/photo).
Myself, Skip atto data in reviews and only look for PCMark vantage and as a 2nd choice AS SSD which was developed for SSDs. AS SSD is what I use on my systems (PCmark Vantage cost money and is rather large). AS SSD is not perfect as it uses Compreesd data, but does come closer to mimicing real use than atto.