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.
Here we see the beta firmware effectively gave up some random read performance in favor of increasing the performance of random writes. This is a good way to go (to a point), as write performance is the usual weakness of MLC-based SSDs. The left region of our sequential read test falls closer to the realm of random reads, as MLC flash blocks are larger than 64kB.