AS SSD is a great free tool designed just for benching Solid State Drives. It performs an array of sequential read and write tests, as well as random read and write tests with sequential access times over a portion of the drive.
AS SSD includes a sub suite of benchmarks with various file pattern algorithms but this is difficult in trying to judge accurate performance figures.
Under the AS SSD benchmark, the read score of the NX500 drops below that of the Corsair Force MP500 drive while the write score of the new drive is significantly improved compared to the previous drive.
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