Yapt (yet another performance test) is a benchmark recommended by a pair of drive manufacturers and was incredibly difficult to locate as it hasn't been updated or used in quite some time. That doesn't make it irrelevant by any means though, as the benchmark is quite useful. It creates a test file of about 100 MB in size and runs both random and sequential read and write tests with it while changing the data I/O size in the process. The results are a good look at overall drive performance.
As YAPT is not a 4k aligned test, some SSDs have a particularly hard time with it. Intel SSD 730 has more of an issue with non-aligned writing than the other drives here, explaining the off results seen above. In sequential writes, the lower speeds of smaller capacity units was apparent. The Silicon Motion controller seems to handle random (misaligned) writes in an identical fashion to the Marvell controller. The random write chart lines slope upward because the misalignment has less of a negative impact as write size increases.