Performance and privacy blend well with Hewlett-Packard's Compaq nc6400 business notebook computer. It comes with a choice of Intel Core Duo or Solo processors, discrete ATI or Intel graphics chip and a 14.1-inch widescreen display packed in a sleek 29.1mm magnesium alloy casing, weighing about 2.1kg. But it also has a custom-designed privacy filter, which narrows the display's viewing angle with no blurring or image distortion. Screen data is visible only to the user, while people on either side see only a dark, blank screen. This comes in handy when using the laptop in tight spaces, such as inside an aircraft cabin. Prices for the Compaq nc6400 notebook PC start at $14,980.