Day-to day tasks on the 800MHz CPU were not bad as it the clock speed can be bumped up to 2GHz with Turbo Boost. However, vide rendering isn’t advisable as the Intel 530 GPU performs averagely with this kind of modest CPU, on-board.The only game which played reasonably well was a low-demanding version of Counter-strike Go.The 45 Watt Hour battery was actually good and offered up to 3 hours of backup on gaming. Moving on, we got more than 6 hours while watching movies and more than 9 hours on day to day usage with the brightness set at 75 percent.

Asus UX305 is a very good option for those who are looking for a budget Ultrabook with minor compromises. The built quality is pretty good and battery support is also impressive in all counts. There is a very good screen to look up to and the keyboard isn’t that bad either. So if you are ready to make a few compromises in terms of gaming, Asus UX305 might just be the one you would like.The GIGABYTE Aero 14 has an innovative design that will definitely stand the test of time. It’s the perfect choice if you’re often on the go with 10 hours of battery life an entire day and weighing only 1.89 kilos/ 4.2 lbs, which makes it an ultraportable.

The GIGABYTE Aero 14 is powered by a NVIDIA GeForce GTX 970M GPU and the Intel Quad cCore i7 H-series CPU, giving it enough computing power to perform even the most demanding tasks you can throw at it. The QHD 2560×1440 IPS display renders crystal-clear images from various viewing angles.If you own a Toshiba laptop, we've got good news and bad news. The good news is that you're going to get a new battery for free. The bad news is that your current battery is basically a brick full of molten lava.The Consumer Product Safety Commission has announced a recall for battery packs in Toshiba laptops sold between June 2011 and January 2016. The recall includes nearly 40 models of laptops from the Japanese manufacturer. The company has published a full list of affected devices so consumers can see if they own one of the fire hazards.

Toshiba has also released a free, downloadable utility that can automatically detect if a device is using a defective battery. Owners of affected devices can get a free replacement battery from Toshiba.The CPSC recall affects slightly fewer than 100,000 units sold in the United States and another 100,000 sold in Canada. So far, there have been four known instances of the batteries overheating and melting. Luckily, none of those cases resulted in injuries.Most of the defective batteries were sold with their laptops, but some users may also have received the problematic units if they purchased a replacement battery or had it replaced during a repair.If you own one of the bad batteries, Toshiba recommends turning off your laptop and removing the battery pack immediately. Until a replacement pack arrives, you'll have to power your device using its power adapter.

Toshiba's latest recall marks the largest such event for the company, though it still falls short of competitor Dell's massive recall of 4.1 million batteries in 2006 and Sony's effort to replace 9.6 million batteries the same year.Microsoft researchers think they can answer the riddle to longer life batteries in laptops and tablets - by taking an approach that's being used to boost performance in the datacentre. Software-defined networking (SDN) has been a hot topic for the past few years for those keen on next-generation datacentre design. Cisco scrambled to figure out its story for the hardware-saving network virtualisation technology, while Google last year launched its own SDN, Andromeda, to optimise networking capabilities and performance on Google Cloud Compute.

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Similar efforts have been made to abstract key functions from other hardware, such as storage and servers at the datacentre. However engineers at Microsoft Research think the general approach can also deliver a longer life battery in consumer devices. Their idea is not to build better batteries but to rethink how a computer is built so that batteries last longer without a charge.To do this, researchers are working on a "software-defined battery". In fact, the prototype devices involve multiple kinds of existing batteries that are optimised for certain tasks - say low-power jobs like processing a Word document versus high-demand tasks such as rendering a video. These batteries work in tandem with software to keep laptops and tablets charged longer.

Device makers have eked out better battery performance largely through hardware modifications and improvements to lithium-ion batteries, though as Microsoft Research points out, these gains haven't kept pace with faster processors and richer screens and typically don't cater to different usage patterns.In Microsoft's vision for the software-defined battery (SDB), an operating system like Windows would orchestrate which task to allocate to the most appropriate battery."Deciding how much power to draw from each battery, and how to charge each battery is non-trivial," Microsoft Researchers note in a paper to be presented at the ACM Symposium on Operating Systems Principles this week.The SDB software resides in the OS and implements a set of policies and APIs to optimise battery selection and usage."The SDB software uses simple APIs to communicate with the SDB hardware. The algorithms implemented by this software use various metrics for increasing the single charge-discharge duration of the device, and the longevity of the batteries, and thereby decide the ratios in which to discharge each battery, and the ratios in which to charge them," the researchers write.

It would also use machine-learning to make suggestions as to how to extend battery life based on a user's habits - for example, it would notice that a person plugs their tablet in at a certain time every day just before delivering a long PowerPoint presentation.Blending the smarter operating system and machine-learning, the computer could optimise how it charges to suit a user's habits and minimise the number of times a day the individual in question needs to plug it in.For example, it could figure out that during the day the computer is mostly used for email and Word documents, whereas at night it's used for browsing the web and watching videos.Microsoft Research's Bodhi Priyantha, Ranveer Chandra, and Anirudh Badam say the work is currently only an investigative project. However, they have built prototypes that they hope will one day translate into consumer products.

A new Microsoft research project suggests a radical alternative: Why don't we build a better computer?
Microsoft researchers, working with colleagues from academia, have come up with a system that uses multiple kinds of existing batteries, working in tandem with smarter software, to keep laptops and tablets charged much longer than current standards.
"Rather than waiting for the perfect battery, we're using all the technology available right now," said Ranveer Chandra, a principal researcher at Microsoft Research who is somewhat obsessed with extending battery life.
The researchers will present the project, called Software Defined Batteries, at the ACM Symposium on Operating Systems Principles next week. It's still a research project for now, but they have built working prototypes and are hoping it will eventually be used in consumer products.

To understand how the system works, it helps to understand how most computers work right now.
A typical tablet or laptop computer may contain more than one of the same kind of battery, all designed to charge and power the gadget in the same way. The system for managing that charge is generally handled within the hardware itself, rather than the operating system. Device makers have managed to squeeze a lot of battery life out of this method, but Chandra said they've still been reliant mainly on better batteries. The problem is that those battery improvements haven't kept pace with big advances in other aspects of computers and devices, such as faster processers and better screens.
Meanwhile, people are using their devices for more and more sophisticated things. That means they need different kinds of options, like a fast charge right before a big meeting or a more heavy-duty charge that can keep a computer powered through an international flight.

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"Everyone wants a better battery, and while lithium-ion is generally good, it can't meet all our wants and needs," said Julia Meinershagen, a senior engineer with Microsoft's Surface Devices who worked on this system as a side project.
The software-defined battery system takes a different approach. It combines several different kinds of batteries, all of which are optimized for different tasks, into the same computer. Then, it works with the operating system to figure out whether the user is, say, looking at Word documents or editing video footage, and applies the most efficient battery for that task.
The system also uses a technique called machine learning to learn from a user's individual habits, so it can figure out how to extend battery life based on how that person is using the device.
"Even the optimization is personalized to the users' needs," said Anirudh Badam, a researcher who worked on the project.
For example, the system may recognize that the user plugs in the tablet every day around 2:45 p.m., and then gives a long PowerPoint presentation every day at 3 p.m. That means the computer needs to be ready to do quick charge at that time, so the person can make it through that afternoon meeting.

Another user may use the computer primarily for e-mail and Word documents during the day, then switch to surfing the web and watching videos on a train or bus commute home. Based on those habits, the computer can optimize the charge to make sure the user can do both without having to search desperately for an outlet.
As the research progresses, Chandra said he sees uses far beyond just laptops and tablets. This kind of thinking could eventually be applied to phones, cars and anything else that uses a battery, he said.
"We think we can get you the benefits of the different types of batteries that have already been invented, rather than having to keep on waiting for the ultimate battery to be invented," Chandra said.
In the span of two days last week, I traveled back and forth to the office twice, wrote this column, streamed two episodes of "Sherlock,” drank seven cups of coffee and recharged my phone four times. I never once plugged in my laptop.

Laptops have a new talent: ultra-marathoning. Computers coming this winter can last up to 22 hours on a single charge. That’s enough battery for two full days of work…or one really, really bad day. Battery life is the ultimate party pooper. No matter how amazing my shiny new phone, laptop, camera or watch might be, I still have to run around finding a place to plug it in. On my last business trip, I had to pack a power strip.We demand the impossible from our gadgets—to be fast, light as a feather, cheap, with enviable looks and batteries that go on and on. Here’s the thing: With laptops, at least, we’re actually getting close to having it all.

You’ve long been able to buy a battery that was so big it transformed your laptop into a luggable desktop. But the latest 13-inch laptops from Apple, Acer, Dell and Lenovo pack enough oomph to do real work in a package you can hold in one hand. I borrowed them all, then unplugged them. The laptop with the most stamina, by far, is the Lenovo ThinkPad X250. Shipping next month for $1,150 and up, the model I tested will be offered with an extra-large removable battery that helped it last over 21-and-a-half hours in one of my stress tests.

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