Ah, OK. On that basis, I would think the OCZ Vertex Series OCZSSD2-1VTX30G is a better deal; performs quite a bit better & ~2x capacity at just +$12 more per drive, for two to four drive RAID setups. I'd imagine more disks would be hitting interface limitation, negating single drive performance?

http://diskcompare.com/filter/?mis=&t=ssd&s=&p=100