i-RAM

The i-RAM is a solid-state storage device produced by Gigabyte and released in June 2005. It has four DDR RAM DIMM slots, and a connection via a SATA port enables a PC to see the i-RAM as a hard disk drive, which can also be made bootable. The SATA interface limits available bandwidth to a maximum sustained throughput of 150 MB/s, but allows a latency of 0.1 ms. As the DRAM is a volatile memory, an integrated battery allows the contents of DRAM to be preserved for a limited amount of time after the device's power supply is interrupted. The I-Ram has the advantages of fast transfer rate and access time, no moving parts, a lower cost than traditional solid-state drives, unlimited write cycles compared to flash memory and it doesn't slow down over time.However, it has the disadvantages of high cost compared to traditional hard drives, low capacity (4 GiB maximum), the transfer rate restricted by SATA 150 bus (1.5 Gbit/s),it is not physically compatible with all double-sided DDR RAM modules using heat spreaders due to tight spacing, power loss causes data lossthe battery can fail, potentially difficult to find a replacement battery,adding memory wipes data from all modules and no ECC support.