ATTO is another "quick and dirty" type of disk benchmark that measures transfer speeds across a specific volume length. It measures raw transfer rates for both reads and writes and graphs them out in an easily interpreted chart. We chose .5kb through 8192kb transfer sizes and a queue depth of 6 over a total max volume length of 256MB. ATTO's workloads are sequential in nature and measure raw bandwidth, rather than I/O response time, access latency, etc. This test was performed on blank, formatted drives with default NTFS partitions in Windows 7 x64.
|ATTO Disk Benchmark
|More Information Here: http://bit.ly/btuV6w
The Vertex 450 carves a quirky path through our ATTO chart, spiking and then dipping sharply at the 16KB and 32KB transfer sizes, respectively, in both the read and write tests.
In any case, however, the drive performed well, coming in what is essentially a three-way tie for first in the write test with the Corsair Force GT and the OCZ Vertex 3.20, leaving all but the OCZ Vector behind.
Things were much more tightly grouped in the read test, with four drives scoring within just a few MBps of one another and only one SSD (the Corsair Neutron) delivering less than 500MBps.