Performance in Intel IOMeter

Sequential Read & Write Patterns

We’ll start out with the synthetic IOMeter benchmark. This pattern measures the drive’s sequential read and write speed on data blocks of different size (from 0.5 to 1024KB). The table shows all the results we’ve got and the diagram shows the maximum speed for each drive.

There is a leading group of five flash drives that show similar speeds, about 33MBps. Four more models made it to 30MBps. Ss many as 14 models could not reach 20MBps even. What is surprising, the Transcend JetFlash 185 is among the slowest here. In our previous test session, the 2GB JetFlash 185 delivered an acceptable read speed and a superb write speed.

The JetFlash 185 is higher in the table at writing, yet it doesn’t show any records, being twice slower than the leader. The ATP ToughDrive, Super Talent 200x and A-Data C702 have dropped out of the group of leaders of the previous test. All of them are quite fast, yet there is a large gap towards the faster models. Note also the huge difference between the leaders and the losers: the fastest drive was 2.5 times as fast as the slowest one in the read test but now the difference is fivefold!