PCPer File Copy Test
Our custom PCPer-FC test does some fairly simple file creation and copy routines in order to test the storage system for speed. The script creates a set of files of varying sizes, times the creation process, then copies the same files to another partition on the same hard drive and times the copy process as well. There are four file patterns that we used to try and find any strong or weak points in the hardware: 10 files @ 1000 MB each, 100 files @ 100 MB each, 500 files @ 10 MB each and 1000 files at 1 MB each.
Starting off, we see the majority of these lower cost SSDs tend to stay within the same general range of speeds in both our create and copy tests. An outlier in copy is the Samsung 840 EVO, which has its TurboWrite caching struggle a bit when performing a simultaneous read + write back to the same drive. This test also completely fills that cache in short order, so the longer speeds would not be typical in normal usage unless you were continuously writing several GB of data at >300 MB/sec.
Circling back to the ARC and the Vertex 460, they appear to perform with reasonable similarity.