ADATA Premier Pro SP920 256GB Solid State Drive Review

IOMeter

IOMeter is an I/O subsystem measurement and characterization tool for single and clustered systems. It is used as a benchmark and troubleshooting tool and is easily configured to replicate the behaviour of many popular applications. One commonly quoted measurement provided by the tool is IOPS.

IOMeter allows the configuration of disk parameters such as the ‘Maximum Disk Size’, ‘Starting Disk Sector’ and ‘# of Outstanding I/Os’. This allows a user to configure a test file upon which the ‘Access Specifications’ configure the I/O types to the file. Configurable items within the Access Specifications are:

• Transfer Request Size
• Percent Random/Sequential distribution.
• Percent Read/Write Distribution
• Aligned I/O’s.
• Reply Size
• TCP/IP status
• Burstiness.

Unconditioned Read / Write

Conditioned Read / Write

The other part of this drive that ADATA are keen to shout about is the IOPs performance. When reading multimedia files, IOPs is just as and if not more than important. Like the read and write speeds seen on the previous pages, the IOPs results are superb to see with high levels of performance see right out of the box and they stay right at that level throughout the testing period.

Drive Comparison

For the purpose of drive comparison I use the performance figures from both unconditioned and conditioned tests with 0% data fill.

With such a high level of read IOPs performance, the SP920 is close to being the leader of the SATA based group of drives with the M550 just nudging in front. Whats more important though is how the performance fairs over time and this is where the SP920 comes in to its own, with just shy of 95k read and 80k write measured.