ATTO is one of the oldest drive benchmarks still being used today and is still very relevant in the SSD world. ATTO measures transfers across a specific volume length. It measures raw transfer rates for both reads and writes and places the data into graphs that can be very easily interpreted. The test was run with the default runs of 0.5KB through 64MB transfer sizes with the total length being 256MB.
Benchmark Results: On ATTO Disk Benchmark we see that the SBXe 960GB drive crushed it by reached speeds of up to 3.22 GB/s read and 2.96 GB/s write at a Queue Depth of 4. These scores are nuts and way higher than the drives rated sequential read/write speeds of 2500/2100 MB/s. We talked to Phison and they are aware of this ‘issue’ and it is due to how the controller is handling compressible data. This performance anomaly is the reason that Phison does not use ATTO to show off the performance of their drives. We usually have an ATTO Disk Benchmark chart that shows where the drive being tested lands, but we will not even bother putting the SBXe on there since this benchmark is not reflective of actual performance.
CrystalDiskMark is a small benchmark utility for drives and enables rapid measurement of sequential and random read/write speeds. Note that CDM only supports Native Command Queuing (NCQ) with a queue depth of 32 (as noted) and shows the highest score of five runs.
Benchmark Results: The MyDigitalSSD 960GB drive maxed out at 2533 MB/s read and 1885 MB/s write in the standard sequential write test that is done at Q8T1. Random 4K performance topped out at 370,400 read and 284,200 IOPS write. We are pretty close to the drives rated read speeds and a little low on the write side.
Let’s look at some other benchmarks!