Toshiba 480gb q300 internal 25 sata iii ssd key features a15nm 3 bit per cell nand flash memory adaptive size slc write cache technology high speed boot up fast system responsiveness resistance to vibration and shock move beyond hdd if your pc canlsquot keep up with you itlsquos time to upgrade with a toshiba q300 solid state drive with 3 bit per cell flash and unique toshiba controller technology youlsquoll experience high speed boot up and fast system responsiveness a q300 ssd is