Dell has begun offering 250 GB 2.5" hard drives with perpendicular magnetic recording technology in two portable computers. The first mobile computers to offer either single or dual 5400 rpm 250 GB drives are the Alienware Aurora m9700 notebook and Dell's fancy XPS M2010 portable computer. For the Alienware model, the high-capacity drive is offered as a $300 upgrade over the standard 80GB hard drive, while the extra 250GB of space in the XPS M2010 will cost $250 over the standard 80GB model. A two disc configuration of 500GB lists for $500, while the RAID option is priced at $525. The Alienware Aurora m9700 is available from about $1600 while the XPS 2010 price starts from $3000.