ADATA's SU900 SSD is a very solid drive built on the well-tested foundation of MLC flash paired with a cost-effective SMI controller. This comes at an interesting time where the majority of the market uses TLC chips for their budget-oriented drives.

Overall performance is very good and within a few percent of the fastest SATA drives in our test group. This makes the SU900 compete with the Crucial BX300, Crucial MX200, and Samsung 850 Evo. Of course, M.2 NVMe-based drives are much faster in synthetic tests and a bit faster in real-life, but the difference is not that big, especially when you don't copy ISO files all day.

ADATA's SU900 512 GB SSD can currently be found online for $215, which is considerably higher than the competition that has their same-capacity, similar performance drives sitting at around $150. ADATA does offer a longer warranty and higher endurance than some of those drives, but the current pricing is still too high in my opinion. A more realistic price would be in the $160-$170 range, which should definitely put the SU900 on your list of drives to consider, especially if you don't trust TLC drives.