I-RAM

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The i-RAM^[1] was a PCI card-mounted, battery-backed RAM disk that behaved and was marketed as a solid-state storage device. It was produced by Gigabyte and released in June 2005,^[2] at a time when genuine solid-state storage solutions were generally still less affordable than an i-RAM product with superficially similar capabilities. The i-RAM utilised DRAM, a type of volatile memory, and was equipped with a lithium-ion battery to provide backup power. This backup power was necessary only when the host computer was either unplugged or completely powered down. Under normal conditions, the i-RAM could draw sufficient power from the PCI bus for RAM refresh, as the PCI bus maintains standby power even when an ATX system is shut down. However, the preservation of the DRAM's contents was limited to a duration of 10 to 16 hours, depending on the configuration, after the power supply was completely interrupted.