consumption

iPhone 5 users in Europe are keeping mobile networks busy by eating up the most data.

Among 125 devices included in a study out today by Arieso, users of the newest iPhone downloaded 50 percent more data than did those with an iPhone 4S and four times as much as did those with an iPhone 3G. But Samsung users also proved to be big data hogs, at least in terms of uploads.

Owners of the Galaxy S3 took first place in terms of the amount of data uploaded, followed by those with the Galaxy Note 2. That put the iPhone … Read more

Smartphone batteries may soon last twice as long -- if an MIT spinoff's power amplifier technology lives up to its promise.

The power amplifier is one of the most power-hungry pieces of hardware in a phone. It converts electricity into radio signals and consumes power in two basic modes: standby and output signal for sending out digital data. Such a chip wastes more than 65 percent of its energy, according to a report in the MIT Technology Review, and the only way to make it more efficient is by reducing the power used in standby. … Read more

Tablets are "reinventing" Americans' relationship with print publications, according to a new report from digital-business analytics firm ComScore.

Based on new figures, more and more tablet owners in the United States are using their tablets to read digital periodicals on a daily basis. For example, ComScore cited that approximately 1 in 10 tablet owners read digital magazines and/or newspapers on his or her device every day as of August 2012.

Mark Donovan, senior vice president of mobile at ComScore, explained in the report that tablets are "redefining" how people consume news because the format is … Read more

Apple's iPad costs precious little for you to charge it each year, according to a new study.

The Electric Power Research Institute (EPRI) conducted a study recently to see how much the iPad costs in electricity if users fully charge it every other day. The research agency, which is funded by electric power companies, found that the iPad will cost owners $1.36 a year, thanks to its consumption of just 12 kWh of electricity each year.

The EPRI assumed that there are now 67 million iPads in the world and applied the average energy use to each device … Read more

Weeks after coming under fire from Greenpeace advocates for using excessive energy for cloud computing, Microsoft announced it will become carbon neutral across all of its operations starting July 1.

"It's the right thing to do. And it's also an opportunity to promote positive change, as the world transitions to new ways of using energy and managing natural resources," Microsoft's chief operating officer Kevin Turner said in a blog post yesterday. "That's why today, Microsoft is taking a significant step to further reduce our environmental footprint."

July marks the beginning of the … Read more

Electricity costs on game consoles have soared into the billions with tons of energy being wasted, according to a study (PDF) by researchers at Carnegie Mellon University. However, it doesn't have to stay this way.

The moral of this study: power down when done playing.

According to the research, 68 percent of all game console energy consumed in 2010 happened while in idle mode, which equaled 10.8 TWh of energy and about $1.24 billion in electricity costs. Overall, 1 percent of U.S. residential energy consumption in 2010 was spent on video game consoles, which is an … Read more

Sony is looking to revolutionize the inefficient way in which we consume power.

A new concept video from the electronics giant shows how we could use power more efficiently in the year 2030 by switching to smart outlets with authentication and wireless charging on a broad scale, assuming we survive the zombie Mayan apocalypse.

The prototype power outlet, integrated with a short-range wireless FeliCa transmitter (and a new RFID over power line technology), allows the user to swipe a pay card across the faceplate and pay for energy on the spot. What makes it truly interesting is if humankind keeps progressing towards alternative energies (such as wind, solar, and biomass), then our outlets could give us options as to what source from which we obtain our power. The video description notes that with this outlet, "the user can actively control and manage power consumption on a user basis as well as on a device basis." … Read more

Perhaps you are aware that we conduct power consumption testing across a number of review categories.

David Katzmaier started it with TV reviews in 2006. We rolled it out to desktops, laptops, and monitors in 2009. At least for most desktops, measuring power consumption no longer makes sense. So we're going to stop.

I wish we'd started testing energy usage on desktops earlier, particularly with Intel's old power hog Pentium D chips. The problem is Moore's Law. Intel's Sandy Bridge chips (sorry, "second-generation Core") are too damn efficient. They're also pretty much everywhere.

The result is that our power draw tests aren't all that interesting anymore for mainstream PCs. The chart below helps illustrate the point.… Read more

The Natural Resources Defense Council offered kudos to Sony and Microsoft last week for what the organization sees as a significant improvement to their gaming consoles: reduced energy consumption.

A 2010 Sony PS3 and 2010 Xbox 360 each consumes approximately 90 Watts of power during gameplay. That represents a 50 percent energy reduction compared to the 180 Watts the 2006 models consumed during gameplay, according to the results of a study by the Natural Resources Defense Council (NRDC), an environmental advocacy group.

However, gaming consoles still suck down 80 percent of their full power level when they are in menu … Read more