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IOMeter — Sequential and random performance

IOMeter fuels much of our latest storage test suite, including our sequential and random I/O tests. These tests are run across the full capacity of the drive at two queue depths. The QD1 tests simulate a single thread, while the QD4 results emulate a more demanding desktop workload. For perspective, 87% of the requests in our old DriveBench 2.0 trace of real-world desktop activity have a queue depth of four or less. Clicking the buttons below the graphs switches between results charted at the different queue depths. Our sequential tests use a relatively large 128-KB block size.



The Evlvr looks astonishingly fast across the board, but remember that the Portable SSD X5 specifically didn't like our sequential IOMeter tests. Setting the delta between the X5 and Evlvr aside, the Patriot drive beats the USB external crowd handily, except for an uninspired showing at QD1 for reads. Let's move on to random response times.



Read response times are ordinary, but the Evlvr's write response times are as snappy as those of the Portable SSD X5.

Patriot's first Thunderbolt 3 drive looks great so far. It excelled in our IOMeter synthetics, but the true test of any external drive is its real-world file transfer speeds. We have just the thing for that.