IOMeter is another open source synthetic benchmarking tool which is able to simulate the various loads placed on hard drive and solid state drive technology.
We use a custom Kitguru configuration for 4k random write to measure performance. We use the same test, but for random read performance also.
IOPS performance is strong, for a Sandforce 2281 powered drive. 4k random write performance rated at 41,335, with 4k random read dropping to 25,082 IOPS. Strong all round results and in the top 10% of 120GB Sandforce powered drives we have tested to date.