Currently its a prototype. Here is a quote from TheRegister.
“Unlike OCZ’s Z-Drive, a PCIe-connected 1TB SSD shown at this year’s CeBIT, Colossus comes in a standard 3.5-inch drive bay form factor. This format is generally used for hard drive storage arrays and server and desktop drive bays, with the 2.5-inch format, which many SSDs use, designed into notebook computers.”
The Colossus offers read and write performance up to 256MB/sec through a 3G SATA Connection.
Hopefully when the prices drop, we can implement these into desktops and see some better performance, right now prices are around 800$ so its just not feasible…
Here is a link to Guru3D that shows it off.