So much of Windows 8 focuses on mobility, so the battery life of the devices you purchase will be key. As a rule, users who travel or work remotely should be able to work through the day on a single charge, or close to it.
Vendors often overstate battery life, claiming 9 hours or more. With real-world useconnecting to the Internet, surfing the Web, checking email, and getting stuff donemost leading Ultrabooks are good for about 6 to 7 hours.
Intel says laptops and tablets running its new Clover Trail processors for Windows 8 will get up to 10 hours of battery life. ARM-based tablets running Windows RT are said to offer about the same. Bottom line: Pay close attention to PCWorld's battery-rundown tests if battery life is a paramount concern for your Windows 8 business PC. Also be on the lookout for devices with user-replaceable batteries, such as the Dell Latitude 10.
A difference of a pound or two doesnt sound like much on a spec sheet, but that extra weight makes a big difference to your back after you've lugged a laptop around all day. If you plan to transport your Windows 8 PC from work to home and back again, or if you frequently work at 35,000 feet, the size and weight really matter.
There's a trade-off as well, though. An 11-inch Ultrabook is lighter and more travel-friendly than a 17-inch laptop, but the 11-incher has a substantially smaller display, and probably less local storage capacity, not to mention fewer ports and a lack of peripherals such as optical drives. You need to choose the most portable PC that still provides the features and capabilities you need.
Ultrabooks range in weight from about 2.5 pounds to more than 4 pounds. Most fall somewhere in the middle, at around 3 pounds. Of course, if you want a truly lightweight mobile computing device, you can use a Windows 8 tablet. The Surface RT weighs a feathery 1.5 pounds and is a serviceable machine for Microsoft Office, but it doesn't have the screen size and flexibility for serious content-creation work.