The SanDisk X400 1TB SSD Review

AnandTech Storage Bench - Heavy

Our Heavy storage benchmark is proportionally more write-heavy than The Destroyer, but much shorter overall. The total writes in the Heavy test aren't enough to fill the drive, so performance never drops down to steady state. This test is far more representative of a power user's day to day usage, and is heavily influenced by the drive's peak performance. The Heavy workload test details can be found here.

Unlike on The Destroyer, the X400 can't quite keep pace with the Crucial MX200 or other MLC drives on the Heavy test, but it is still faster than the other planar TLC drives.

The average service time of the SanDisk X400 on the Heavy test is the best among planar TLC drives, but the TLC drives are all still at the bottom of the ranking by comparison.

The number of latency outliers experienced by the X400 puts it in the same class as the other planar TLC drives, while most of the MLC drives have much tighter control on latency.

As with The Destroyer, the X400 comes in third place for power consumption and overall efficiency, behind the Crucial BX100 and MX200. This is impressive given how write-intensive the Heavy test is and how the the higher power consumption of TLC flash is usually most apparent for write operations.