To test SSDs in as close to a real-life scenario as possible, we install them as a boot drive and install a full operating system – in this case Windows 7 Ultimate 64-bit.
We test in this clean state and then fill the drive up with data and then delete it, running through this cycle a few times before testing the drive again to see if there's much difference in the results after subjecting the drive to this usage cycle.
In general, there wasn't a great deal of difference between the two sets of results, although through longer-term usage there might be.
Sequential read/write performance
4K random read/write performance
Burst speed performance