The Gigabyte i-RAM, as reviewed by Hardware Zone, is a card that holds up to 4 gigs of RAM, and has a battery onboard, so data stored on the RAM will stay, even if it is moved from one computer to another, for about 16 hours.  It utilizes SATA to transfer data, and it does it at an almost unbeleivable speed.  See how it compares to one of the fastest SATA drives around.
“The new Gigabyte i-RAM is a device that uses DDR memory for storage while emulating itself as a SATA hard disk drive. Using up to 4GB of DDR400 memory, this card can boast unimaginable access speeds. Just how fast is this device as compared to WD’s Raptor?”

Here are some more Storage reviews from around the web:

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