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The drive is formatted with exFAT out of the box, but to run some of our benchmarks, we re-formatted it in NTFS. To test the drive we used a Gigabyte GC-Maple Ridge add-in card.
CrystalDiskMark is a useful benchmark to measure the theoretical performance levels of hard drives and SSDs. We are using V8.
The ATTO Disk Benchmark performance measurement tool is compatible with Microsoft Windows. Measure your storage system performance with various transfer sizes and test lengths for reads and writes. Several options are available to customize your performance measurement including queue depth, overlapped I/O and even a comparison mode with the option to run continuously. Use ATTO Disk Benchmark to test any manufacturers RAID controllers, storage controllers, host adapters, hard drives and SSD drives and notice that ATTO products will consistently provide the highest level of performance to your storage.
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.
Corsair's official Sequential performance ratings for the EX400U are up to 4,000MB/s for reads and up to 3,600MB/s for writes. Using our test setup with the ATTO benchmark, the best we saw from the drive was 2,920MB/s for reads and 2,810MB/s for writes. Switching over to the CrystalDiskMark benchmark we got a read result of 3,129MB/s with 3,024MB/s for writes. Although these results are short of the official figures they are still the fastest we've seen for a USB drive to date.
