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.
Chart-topping 4k random performance is accomplished by ADATA's 24GB SP300 mSATA SSD. A random write score in excess of 10,000 (or 10k, if you prefer) IOPS proves that this SSD has great potential.
When used in conjunction with our Seagate 7200.12 HDD for Intel SRT performance figures, the configuration's write performance plummets to a HDD-limited sub-500 figure. Random read remains good at the 7k mark, allowing fast performance in an OS environment.