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.
The 320 did well in reads and writes, but fell behind the Samsung 470 in both random and sequential write speeds. This is mainly due to the 320 being (slightly) write speed limited, while the 470 writes at the speed of the SATA bus. The SATA 6Gb/sec models naturally trounce the 3Gb/sec models under YAPT.