FYI folks --
NOTE: The OCZ forum thread discussing this issue has been closed for now.Many on these forums including myself have recommended OCZ Vertex 2 in the past.
This is just a head's-up that the current model Vertex 2 (25nm version) is noticeably diminished in write speed, lifespan, and capacity than the previous 34nm version. This affects models 180GB or smaller.
The speed is slower for writing non-sequential data that is not compressible (fallen from 130ish to 80ish MB/s). The lifespan has fallen from 5000 P/E cycles to 3000. The unformatted capacity has fallen by about 4-5GB (for example, a 120GB model is reduced to 115GB, a 4% loss). Obviously this means a larger percentage is lost from a smaller drive (60GB to 56GB is a 9% loss!).
OCZ is indicating that none of this could be helped, as the NAND manufacturer is forcing 25nm on them. I agree. However, particularly damning is that there was no model change, no warning, no decrease in the advertised capacity, and rumor is they are actively deleting complaints on their forums.
There is no visible method for determining whether your Vertex/Agility 2 is 25nm or 34nm other than opening the case, a warranty-ending move. Perhaps it can be checked by way of reported capacity. Does anyone know what the formatted capacity is in OS X of a drive with 120GB unformatted capacity?