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what exactly would the difference be between the current vertex 2 drives versus the vertex 2 120GB that i bought maybe 9-10 months ago?
There have been 3 major versions of the Vertex 2:
(using the 120GB as an example)
- 34nm NAND (original release: 32 x 4GB NAND)
- 25nm NAND (using 16 x 8GB NAND chips)
- 25nm NAND (using 32 x 4GB NAND chips)
#1 Performed great, but due to 34nm no longer being produced, had to be discontinued
#2 When released, benchmarked fine on compressible data, but was slower due to NAND die-shrink process issues, firmware issues, as well as less NAND chips.
These were sold on Newegg (and other vendors) as #1 with no change in specs. This caused a firestorm online. I had purchased one of these, and had to RMA it to receive drive #3...
#3 Addressed most of the non-25nm related issues by going back to more NAND chips, and firmware addressing other issues. You SHOULD be receiving these from any reputable online vendor.
While these drives don't perform EXACTLY like they did when initially released, they are as reliable than the original 34nm drives. I've owned one since 1/31/2011: No issues yet.
http://www.anandtech.com/show/4256/the-ocz-vertex-3-review-120gb/2