The heaviest weight backer so far for Advanced Micro Devices Inc’s Am386SXL chip is Irvine, California-based AST Research Inc for use in its Premium Exec 386SX/25 notebook computer; Intel Corp’s fastest version of the part is clocked at 20MHz; the 7 lbs 7 oz Premium Exec 386SX/25 costs $4,800 with an 80Mb hard disk, 4Mb of RAM, paperwhite VGA-compatible display, a 3.5 floppy drive, ports and MS-DOS 5.0.
