Internally, CrystalDiskMark uses the Microsoft DiskSpd storage testing tool. Two of the traces are sequential accesses, while two are 4K random accesses. for example, uses four different access traces for reads and writes over a configurable region size. The performance is slightly behind the bridge solutions in terms of raw numbers.ĬrystalDiskMark. It does allow the visualization of change in transfer rates as the I/O size changes, with optimal performance being reached around 512 KB for a queue depth of 4. ATTO benchmarking is restricted to a single configuration in terms of queue depth, and is only representative of a small sub-set of real-world workloads. Kingston claims read and write speeds of 1000 MBps and 900 MBps respectively, and these are backed up by the ATTO benchmarks provided below - in fact, the numbers are actually higher than the claimed ones. Yet another use of these synthetic benchmarks is the ability to gather information regarding support for specific storage device features that affect performance. The results translate to the instantaneous performance numbers that consumers can expect for specific workloads, but do not account for changes in behavior when the unit is subject to long-term conditioning and/or thermal throttling. Benchmarks such as ATTO and CrystalDiskMark help provide a quick look at the performance of the direct-attached storage device.
