OCZ has unveiled a new innovative way to combine both a HDD and an SSD onto a single PCIe card providing a caching scheme that is so effective that a 5,400-RPM drive can be used without sacrificing much performance.
The SSD on the card can use multiple SandForce controllers arranged in a RAID 0 array to serve as a cache for the HDD and to control the split OCZ relies on Dataplex software from Nvelo.
OCZ is still undecided on the exact configuration it will use on the RevoDrive Hybrid when in arrivies in July but prices are expected to start from $350 which might combine a 500GB hard drive with a 60GB SSD.
Source : Tech Report