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Why Laptop Batteries Don't Last as Long as Claimed

More Accurate Battery Test for Laptops in Our Future?
Anyone who has shopped for a laptop knows that a manufacturer's estimated battery life is estimated pretty liberally. Usually, the numbers are based on a test called MobileMark 2007, which measures how long a computer's battery lasts under conditions that are, to be polite about it, completely unrealistic. The screen is set to 20-percent brightness, Wi-Fi and any other wireless tech shut off, and all apps are turned off. As the New York Times said, "it turns a computer into a dimly lit clock."

The problem is that nobody simply sits in front of their laptop staring at a blank screen. In fact, most users treat their laptops just like a desktop PC. Most users listen to music, instant message, and browse the Web (all at the same time) with the brightness pumped up to 100-percent. It's no surprise that when manufacturers claim battery life is around six hours, it .

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Computers, CES 2009

AMD Releases Netbook Processor, Won't Admit it

AMD Releases Netbook Processor, Won't Admit it
With Intel's tiny, low powered Atom turning out to be a smash hit in bargain-priced, small-sized netbooks, and even upstart Via getting in on the netbook/low power with the Nano, it was a matter of when, not if, chip maker AMD would release its own competing part. And low-and-behold, the struggling processor manufacturer chose CES to unveil the Athlon Neo, a low power, low cost part aimed at cheap, but thin notebooks.

AMD is quick to argue that it is not targeting the netbook market cornered by Intel, but instead is looking to bridge the gap between small and thin notebooks, like the MacBook Air and Thinkpad X300, and the lower cost, mainstream systems. As evidence of this, AMD was showing off the HP dv2 an ultra portable "notebook," with a 12.1 inch wide-screen, discrete graphics processor (albeit an aging one), and an external Blu-ray player. The first machine to use AMD's 1.6GHz Neo MV-40 is priced above the netbook range at $899, but comes with many more features than your Eee.

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Computers

Military Supercomputer Shatters Speed Record


When you're looking to set a record, this is how you do it. Not only has IBM's Roadrunner supercomputer come on-line, it's now the world's fastest -- twice as fast as the old BluGene/L champ -- and churning through 1.026 quadrillion calculations per second.

The $133 million supercomputer achieved the milestone with the help of 12,960 "improved" Cell processors (yes, like those powering your PlayStation 3) and a smaller number of AMD Opteron processors -- 116,640 processor cores in total. Unfortunately (or fortunately, depending upon your perspective), Roadrunner is for military use only so you'll have to solve the traveling salesman problem on your own time. While not quite into Exaflop territory, we're definitely on the way. [Source: NYTimes]

[Thanks, Chris S.]

Computers, Advice, Laptops

Five Things to Consider When Buying a Laptop


Five Things to Consider When Buying a Laptop
Buying a new laptop can be a daunting task. First off, there are many more factors to take into account when buying a laptop than when buying a desktop PC -- size and battery, for example. Budget laptops can be alluring, but will they have the horsepower you need for daily computing tasks? What difference does having an AMD or Intel processor make? And how do you make sense of the alphabet soup that is Wi-Fi (802.11a, b, g, n)? Well, dear reader, and potential buyer, Switched is here to help you wade through the spec lists you see on those Sunday circulars and help you make the best of your laptop money. Take a look at our crib sheet of five things to consider when picking out your new portable, which starts on the next page, so click below....

Computers

HP Delivers Nine New Desktops

HP Delivers Nine New DesktopsHP has introduced nine new desktops across its Pavilion and Presario lines. Most of the new computers feature AMD Athlon processors and Windows Vista Home Premium Edition (two higher-end models feature Intel chips, while a budget model offers Windows Vista Home Basic Edition). All of the new machines are stocked with DVD burners employing LightScribe technology, which can etch custom labels you design right onto the tops of CDs and DVDs. The new products range from inexpensive to mid-range to nicely equipped Media Centers. Then there are two pint-sized "Slimline" PCs, like the Pavilion Slimline s3100n pictured here.

From Engadget

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Latest Reviews from CNET.com

CNET provides the latest tech news, unbiased reviews, videos, podcasts, software, and downloads, making tech products easy to find, understand and use.

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