June 4, 2007 Got a computing task so brutal that even a roaring Seagate Savvio 15K hard drive won't cut it? The HyperDrive4 is a 5.25" storage device which uses volatile DDR memory instead of a conventional mechanical hard drive. This might sound crazy, but with a variety of supported methods to seamlessly backup and restore the data, you'd be crazy to pass on performance boosts of up to 20,000% (depending on the application of course). Forget about buying additional hardware too - the HyperDrive4 plugs-and-plays with any machine that supports IDE or SATA (that's just about all of them). The catch? A limit of 16GB per HyperDrive4, and a hefty price tag.