The G-DRIVE is a single drive product, while the G-RAID contains two drives. The benefit of a single drive unit is smaller size and reduced heat, so no fan is required. The G-RAID uses two drives hardwired as Raid 0 so the computer will see the unit as a single larger drive. The paired drives can increase performance up to 50% over a single drive unit. This increase varies based on connection type and the system’s capabilities.