Users interested in a blazing fast RAID0 SSD setup but don't require that much storage have other options, however. Another popular line of SSDs from OCZ is the Vertex, which starts out at only 30 GB versus the Apex entry level model at 60 GB. The Vertex is categorized as a performance solid state drive and although it uses the same multi-level cell (MLC) technology as the Apex, there are some notable upgrades inside, including the Indilinx SSD controller and the inclusion of 64 MB of onboard cache. The Vertex is more expensive per GB than the Apex, but the dual 30 GB configuration we will be tinkering with today will only set you back $300, half the price of the dual Apex drives we used... but only 25% of the capacity.

http://www.ocia.net/reviews/vertexraid/page1.shtml