CrystalDiskMark is an easy-to-run and quick utility to use to gauge a drive’s performance. It measures sequential read and write performance and random read and write speeds of random 4KB, 4KB (queue depth 32) and 512KB data.
Here, the Transcend SSD320 once again showed that while its write performance was no slouch, its read performance was significantly poorer than the Transcend SSD720. This is no doubt due its slower asynchronous NAND memory. The OCZ Agility 4, which also has asynchronous NAND memory, was arguably the better performer and this could point to the efficiency of its Indilinx Everest 2 controller at negating the shortcomings of asynchronous NAND memory.