$5009.00 - $5009.00 from 2 stores. User rating:4.8 out of 5. The ultimate in Portable Computing. Make no compromises - the GRT 390Z features a powerful Intel processor to handle the most demanding applications. Utilize up to 2GB RAM, a 64 MB VRAM Graphics card from nVidia, and a powerful processor. Unleash your creativity while maximizing productivity. Edit your own movies, enjoy music or produce and burn DVDs with the optional DVD+/-RW drive all in a 16" LCD display with Sony's XBRITE technology.