Shopping for a laptop these days is a pretty daunting task. The sheer number of laptops available online or in a store’s electronics section is enough to make your mind spin. Most people have a general idea of what their laptop should look like and what they want in terms of features, but are often intimidated by the choices available. That’s where we come in.
The editors of batteries-company.com test hundreds of systems each year to help you find the best laptop. There are a lot of laptops out there, from the large-screen desktop replacement laptop batteries to the lightweight ultraportables, and even netbooks, but all share common features. In this story, we help you narrow your choices by collecting the top 10 laptops on the market today.
Featured in this story
Asus Zenbook UX31-RSL8
(Best Deal: $1,049.99 at Amazon) The Asus Zenbook UX31-RSL8 is the clear leader in the nascent ultrabook category, with better overall performance and Asus a32-f9 extended life battery life than any competitor. It also has a brilliant display, superb sound, and solid construction.
HP Pavilion dv7-6163cl
The HP Pavilion dv7-6163cl supplies quad-core performance, switchable graphics, booming audio, and a sleek aluminum chassis at a fair price, making it the affordable media center laptop to beat.
Apple MacBook Pro 15-inch (Late 2011)
(Best Deal: $1,709.93 at Amazon) The Apple MacBook Pro 15-inch gets new hardware and software, including a quad-core Intel Core i7 processor, AMD Radeon GPU, and OS X Lion, while keeping everything that works well, like the thin and stylish unibody design.
(Best Deal: $499.99) The Asus U56E-BBL6 budget laptop has all the desired features, including a fast Core i5 processor, cutting-edge features, and best-in-class Dell studio 1537 extended life battery life, sold for a price few can pass up.
Acer Travelmate 8481T-6440
(Best Deal: $898.00) What little the Acer Travelmate 8481T-6440 business laptop gives up in horsepower, it gains back with a sleek, ultrabook-like design (low volt processor requires fewer clunky cooling fans) and over 11 hours of notebook battery life.
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Lenovo IdeaPad V570-1066AJU
The Lenovo IdeaPad V570-1066AJU offers excellent performance and a good feature set, for a price few can pass up
Lenovo ThinkPad X220 Tablet
The Lenovo ThinkPad X220 takes top honors among tablet PCs, combining choice aspects of a capable ultraportable business laptop with a multitouch Windows tablet.
Lenovo ThinkPad T420s
The Lenovo ThinkPad T420s is an amazing device when you realize that its power, feature set, and HP nc8230 laptop battery yields are usually found in much heavier laptops.
Apple MacBook Air 13-inch (Thunderbolt)
(Best Deal: $1,234.93 at PCConnection Express)The Apple MacBook Air 13-inch (Thunderbolt) is a formidable player in the ultraportable space, thanks to a Core i5 processor, backlit keyboard, and Thunderbolt port.
Laptop batteries pack information and knowledge base
Interested in Android? You don’t have to buy a device or go to a physical electronics store (do those still exist?) to try it out. You can run individual Android apps and play with the latest versions of the Android operating system on Windows.
Whether you want to try Android before you buy, experiment with the latest version of Android or sync apps between your Android device and your PC, these Windows programs have you covered.
BlueStacks doesn’t replicate the full Android experience, it’s just an “app player” that runs individual apps on your PC. BlueStacks runs in full-screen mode, but you can Alt-Tab and use other programs while it’s open.
Here we’re reading MakeUseOf with the Pulse news reader app, included with Blue Stacks:
Click the Get More Apps icon in the menu to get more apps. You’ll need to sign in with Facebook Connect or create a BlueStacks account to continue. Unfortunately, this page doesn’t contain many apps at the moment.
BlueStacks really shines if you already have an Android device. You can install the BlueStacks Cloud Connect app, available in the Android market, to synchronize apps between your device and your PC.
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YouWave provides a free 7-day trial, which is more than enough time to get a feel for Android apps. It starts an emulated environment with a home screen and app menu.
YouWave doesn’t include many apps, but you can get more from Amazon’s App Store and the AndAppStore. Just click the View menu and select Online Content to view the available app stores.
Click their icons to install them and they’ll appear in the emulator’s app menu. From there, you can launch them and explore the universe of Android apps.
Official Android Emulator
Google’s Android software development kit provides a free Android emulator, although it’s targeted at developers. You can run the latest version of Android with this method, so it’s a great way to try out Android 4.0, Ice Cream Sandwich, if you have a device that’s stuck on an older version.
First, you’ll have to download and install the SDK manager from Google. After installing it, launch it and check off the files for the latest version of Android. Click the Install button and the SDK manager will automatically download and install the required software.
Click the Tools menu once the download has finished, select Manage AVDs and click the New button to create a new virtual device. Select your installed version of Android as the target, name your Android virtual device, then click Create AVD.
You’ll see your new virtual device in the virtual device manager window. Select it, click the Start button and click Launch to launch the Android emulator. Don’t worry if it takes a while to start — it took over a minute to start for me.
Google’s Android emulator definitely doesn’t perform as well as BlueStacks or YouWave. It also doesn’t have the Android Market or any other app store integrated, but you can download app files inside it and install them.
Android’s openness allows developers to create applications like these, which is awesome — no similar solutions are available if you want to try out iPhone or iPod apps on Windows. Still, there are some limitations — the Android Market doesn’t run in any of these environments, for one.
Remember that Android wasn’t designed for the mouse. The experience of using a mouse cursor to navigate apps designed for rich touch interface just isn’t the same — it makes you wonder how well Windows 8’s Metro interface will work on PCs.
The iPad is far from the only tablet in town. The slate market has exploded with big players from Lenovo, Acer, Sony, and ASUS bringing their unique take on slates to the table. There’s the Eee Pad Transformer Prime, which pairs with an innovative detachable keyboard, making it ideal for work and play. Then there’s the ThinkPad Tablet, which is compatible with a stylus for drawing and taking notes on the fly. Whether you’re a fan of Apple or Android, these are the top 10 tablets to buy now.
Apple iPad 2
With its ultra-slim design, faster dual-core performance, FaceTime camera, and gobs of compelling apps, the iPad 2 is the tablet to beat.
Acer Iconia Tab A200
The Acer as07b31 battery Iconia Tab A200 delivers solid performance and some welcome interface enhancements to Android for an affordable price.
Amazon Kindle Fire
The Kindle Fire is the best value-priced tablet yet, offering easy access to loads of content and apps in a well-built design.
ASUS Eee Pad Transformer Prime
The first quad-core tablet, the svelte ASUS Eee Pad Transformer Prime has a brilliant IPS display and comfy keyboard dock.
Barnes & Noble Nook Tablet (8GB, 16GB)
The Barnes & Noble Nook Tablet offers a superior eReading experience, a great display, and smooth performance for an affordable price. The newest model features 8GB of storage for $199 or choose the 16GB model for $249.
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Lenovo ThinkPad Tablet
An accurate digital pen and robust software and security make the ThinkPad Tablet a compelling device for mobile professionals.
The Pantech Element provides impressive 4G LTE speeds in a water-proof design, but the overall cost is a bit pricey.
Samsung Galaxy Tab 7.0 Plus
Samsung’s Galaxy Tab 7.0 Plus is a seriously powerful tablet that doubles as a super-smart TV remote.
Samsung Galaxy Tab 10.1 (Wi-Fi)
Samsung’s super slim and light Galaxy Tab 10.1 is a beautifully designed tablet that does justice to the Honeycomb experience.
Sony Tablet S
The Sony Tablet S provides lots of fun entertainment options–including PlayStation games–in a sleek design, but it’s not a finished product yet.
It’s easy to forget about some of the significant steps backwards we sometimes make in the name of modern life. Ten years ago, my old-fashioned cell phone lasted the better part of a week on a single charge. These days, if I don’t place my iPhone in its docking cradle when I’m sitting at my desk, it probably won’t make it through a single day on one charge. Since last week I wrote about how to extend the life of your laptop battery, here are some tips for getting your smartphone to last a little longer on a single charge.
Dial back your display. Of course, the large color display is the single largest drain on your battery. Since your phone adjusts the screen’s brightness based on the ambient lighting, one way to make it more efficient is to only check your phone indoors or in the shade — in bright sunlight, your phone will be working at max power to make the display bright enough to see.
Shut it down sooner. Your phone has a setting that lets you specify how quickly to time-out the display and put the phone to sleep. Most people I know set that number to the maximum (around 3 minutes on most phones) for convenience, but most of the time you don’t need it on that long. At least half that time you’re just burning batteries. Dial it back to just one minute.
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Turn off Bluetooth. Do you use Bluetooth a lot? Unless you have a Bluetooth headset in your ear all day long or you frequently use Bluetooth stereo headphones, you are wasting a lot of juice on powering the Bluetooth radio unnecessarily. Turn it off and just turn it on for those occasions when you need it.
Just say no to location requests. A lot of apps might ask permission to detect your location so that can provide more targeted information. That might be useful, but ask yourself: How useful? Every time an app has to ping your GPS chip, it uses a bunch of power. Unless you really need that kind of location awareness, just say no.
Turn off notifications. Tons of apps, it seems, want to notify you with all sorts of trivia. Most of the time, such notifications are utterly unimportant and simply waste battery power by forcing your screen to turn on for a few seconds many times throughout the day.
As business travellers upgrade from their three year old laptop they’re increasingly downsizing to smaller, thinner and lighter notebooks.
And whenever Australian Business Traveller takes to the skies we take note of what computers are being used in airport lounges and on the plane. There’s no doubt that the older mid-sized laptops are making way for slimmer models, especially the ‘thin and light’ machines which forego a CD/DVD drive.
And we’re still seeing a good portion of the littlest laptops known as ‘netbooks‘, which were conceived as a low-cost model for school and uni students but have become a ‘second PC’ for many users – including an appealing go-anywhere laptop for the small business set.
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After all, most of the simplest business tasks you need to do on the road can be done on a netbook – without the physical heft or high price tag of a regular notebook, and with added appeal such as a battery that’ll run all day without recharging.
So while touch-screen tablets and ultra-thin notebooks will continue to be the high-tech travel hits of 2011, netbooks are not about to disappear.
If anything, they’re adding features and slicing the price tag. Toshiba’s new NB500 series is a case in point.
At just $100 more, the $499 NB550 ups the ante with inbuilt Harman/Kardon speakers, a HDMI connector for hooking up to a desktop monitor or a flat-screen TV and the ability to recharge your smartphone via a powered USB socket even when the netbook is in sleep mode with the lid is closed.
How to use all that in real life? You’ve got enough juice to work all the way from Sydney to Singapore, but with a notebook – sorry, ‘netbook’ – that’ll barely make a dent in your carry-on bag. Check into your hotel, plug the NB550 into the powerpoint to charge it up overnight, and at the same time you can give your BlackBerry or iPhone a top-up through the USB port.
If you’ve downloaded some video, the next night you can hook the NB550 up to your room’s LCD TV to watch a movie on the big screen – or just play your favourite music through the peppy little top-firing speakers while you catch up on some reading.
You might think that processors hardly matter anymore, especially if you’re interested in lightweight notebooks. After all, just about any current notebook can handle basic Web surfing and light word processing. When you start to do more complex work, though, it’s clear that processors really do matter, as I found out while testing some spreadsheets on new laptops. I tested machines that were either running Intel’s third-generation Core laptop processors (known as Ivy Bridge) or AMD’s second-generation A-series accelerated processing units (APUs).
Now, I’ve done a lot of this testing before, most recently looking at the quad-core Ivy Bridge chips as they first came out, and they impressed me.
This time, I tested one desktop replacement notebook running a 2.6GHz quad-core 45-watt Ivy Bridge chip (with four cores and eight threads), the Alienware M17, along with several thin laptops. The latter systems were running low-voltage processors. Two of them—the HP Envy 4 and the Lenovo Ideapad U310—were Ultrabooks running dual-core 1.7GHz Intel Core i5-3317U Ivy Bridge chips, with two cores and four threads rated at 17 watts. The other one was an HP Envy 6 Sleekbook running a new 2.1GHz AMD A6-4455M quad-core APU with four integer cores (running four threads) also at 17 watts.
Above: Envy 4, Alienware 17x, Envy 6, Ideapad U310
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A few things to note: The AMD-based Sleekbook and the Ideapad both had 4GB of RAM, the HP Envy 4 had 6GB, and the Alienware had 8GB. This shouldn’t matter as these tests do not take advantage of more than 4GB of memory. Also, recall that all of these systems actually can run faster than their native speeds through “turbo” modes depending on how hot the chips go. Finally, there may be a few errors in the results, given that Windows occasionally seems to do certain things on its own and my stopwatch skills are certainly not perfect. You should discount any differences of a second or less, or a couple percentage points of the total.
Here are my results:
As you would expect, the full-power 2.6GHz Quad-core Ivy Bridge clearly beats the low-voltage systems. That’s no surprise because it’s running at a higher clock speed with more cores and more threads, and drawing more power (45 watts versus 17 watts for the others). As I mentioned when I tested an earlier configuration of this system, this is a desktop replacement. These systems pretty much smoke every other notebook I’ve tested, but they are much bigger and heavier with 17-inch displays.
Among the thinner notebooks, the difference is enormous. The Ivy Bridge systems, which scored close to each other, were notably faster than the Trinity one—more than 50 percent faster in most cases. In one of the pivot table tests, it was more than twice as fast.
The Ivy Bridge systems were generally comparable to my tests of Sandy Bridge laptops, but the big difference is that the Ivy Bridge parts are 1.7GHz, 17-watt ones while the comparable Sandy Bridge part (a Core i5-2520M) is a 2.5GHz, 35-watt one, so Ivy Bridge should offer improved heat and HP 530 Battery Life—important for the Ultrabook form factor.
The Trinity system also shows a reduced power consumption compared with the previous generation “Llano” APU (specifically the A6-3410MX), using 17 watts versus 45 watts, but carrying a nominal clock speed doesn’t seem to matter much, as Trinity comes in behind the equivalent Llano part. On the other hand, the reduced power load does let it fit into much thinner designs, which AMD calls “ultrathins” and HP calls “Sleekbooks”.
Note that although Intel has dramatically improved the graphics in Ivy Bridge over the Sandy Bridge generation, the AMD processors—especially the Trinity generation—has better integrated graphics still. That doesn’t show up in these spreadsheet tests, but would matter if you wanted to play intense games.
Overall, the big difference between this year’s dual-core Intel chips and AMD’s laptop offering isn’t more performance, it’s providing similar performance with less power-hungry chips that can run in thinner machines. Still, the differences in performance are notable; Intel chips are still clearly much better performers than the AMD competitor and the quad-core Ivy Bridge is pretty much in a class by itself.
Desktop computers have five main parts: the monitor, the CPU, the keyboard, the mouse, laptop battery and the speakers. Laptops have a screen, a keyboard and a CPU all attached together. How would it be if there was a computer that had the features of both the desktop and the laptop? For example, the portability of a laptop, combined with the full function of a desktop?
That is what the all in one computer concept InOne aims to do. Designed by Jakub Záhor, the InOne is a concept that aims to integrate a desktop and a laptop by putting a tablet and a desktop together, to create the best computing experience possible.
The InOne incorporates all of the following features: a 22 inch screen, a keyboard, a track pad, a touchpad, a tablet and speakers. All of these are built together, as one entity, and the computer is a marvel, to look at. The parts are connected wirelessly, and this creates a very nice wire-free experience. Furthermore, when you type something on the keyboard, the tablet displays what you are typing, so you don’t even have to look up at the screen to see what’s going on!
The layout is structured with the monitor above and at the base of it is the tablet, next to that is the keyboard. The tablet acts like a mini monitor, and displays everything that you type in a preview mode, so you can easily see any mistakes.
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While the layout is very neat and the concept is cool, the keyboard seems is pretty small, this could be a problem. When the InOne becomes a reality, the keyboard is one area the developers might need to concentrate upon. Also, there is no mention of the CPUor major internal specs. Various guesses put the InOne’s CPU at a nano-level, so maybe the CPU will have nano-chips. This would be very cool because the CPU wouldn’t take up any space at all.
Of course, if that’s the case, the price is obviously going to rise, as nanotechnology is not a cheap. We would hope that the InOne will be on par with high-performing counterparts to provide optimal performance.
The tablet is probably the coolest feature of the InOne. The idea is that you are able to take out the tablet for portability. Essentially this means you have two computers in one.A major concern is that the speakers are placed beneath the monitor, which means there could be issues with sound, as the speakers are quite too low.
The black-with-green stripes color tone might not be a popular choice, but there are sure will certainly be a range of colors on offer. All in all, the InOne cold prove to be a the design concept of the future if it is implemented well in the performance department. The InOne is actually feasible with today’s battery technology, but the price would be an issue if it were produced today.
Top Back-to-School Laptops for Your Choice
Top Laptops for Back to SchoolLaptops are usually the most important item on students’ back-to-school shopping lists, but digging through the thousands of laptop models available to find the perfect one is a tough assignment.
After considering your budget and needs, start your quest here, with this selection of the top laptops for students in every category and price range.
Be sure to see our Price and Specs Comparison chart below for more about the laptops mentioned in this article. Note that the laptop prices listed here are the suggested manufacturer retail prices. With back-to-school deals and special student discounts, you should be able to find them for much less.
Ultraportable With a Roomy Display: Acer Aspire Timeline Ultra M5 ($730)
Acer Aspire Timeline Ultra M5Students on a budget hunting for a great ultraportable laptop with a spacious display should take a look at the Timeline Ultra M5 series.
These 14- and 15.6-inch Ultrabooks pack highly desirable features into an 0.8-inch-thick metal frame, offering a long estimated Asus A32-K52 Battery life of up to 8 hours (great for all-day computing on campus), a backlit keyboard, an optical drive, and an optional discrete Nvidia graphics card good enough for gaming or video editing.
On the 14-inch model, $680 will get you last year’s Intel Core i3 Sandy Bridge processor, but springing an extra $50 will bump you up to a third-generation Intel Core i5 chip—a worthwhile investment. The 15.6-inch Timeline Ultra M5 starts at $830.
Desktop Replacement: Alienware M17x R4 ($1500)
Alienware M17x R4Even scholars need some downtime. If your student insists on a laptop that can handle high-end gaming needs (as well as the more mundane course-related ones), this desktop replacement laptop should fit the bill.
The Alienware M17x R4 is a speedy system with excellent battery life, a gorgeous 17.3-inch screen, and a superb, colorfully lit keyboard. Weighing 9.39 pounds, it’s also a heavy beast, so it’s better for students who don’t plan to take their laptops to class.
Backpack-Friendly, With Style: Apple MacBook Air ($1000 and $1200)
Apple MacBook AirApple’s MacBook Air machines are a hit among students for good reason: These laptops are the epitome of portability and performance in one stylish, razor-thin package.
Available in 11-inch and 13.3-inch configurations, the MacBook Air is very backpack-friendly. (The 11-inch model weighs just under 2.4 pounds, and the 13-inch Air comes in at under 3 pounds; both are under 0.7 inch thick.)
Besides being superthin and superfast, the MacBook Airs are great for students who also crave versatility: Booting both Mac OS X and Windows on these laptops is easy (additional license for Windows required).
Ultrathin Windows Laptop: Asus Zenbook Prime UX31A and UX32VD ($1100 and $1300)
The 13.3-inch UX31A and UX32VD are extremely thin and light, packed with the latest Intel processors and graphics card options, solidly and attractively built, and competitively priced against other Ultrabooks and the MacBook Air.
And since their 1080p IPS displays are gorgeous, students will have a much better experience pulling all-nighters staring at their laptop screens.
The UX31A starts at $1100; for students who need more horsepower, the UX32VD, with an Intel Core i7 processor, a full HD display, and Nvidia GeForce GT 630M graphics, is listed at $1300.
All-Purpose Ultrabook: Dell XPS 14 ($1100)
Dell XPS 14Want a good all-around laptop that can last for a full day of toting around campus on one battery charge?
Take a look at the Dell XPS 14 Ultrabook. This ultrathin machine has a 14-inch HD (1600-by-900-pixel) display and excellent audio, which makes it great for multimedia and gaming enthusiasts. The XPS 14 does well in office-productivity performance, too.
Although the XPS 14 is on the heavy side, weighing 4.6 pounds, its exceptionally long battery-life rating of 11 hours may make it worth carrying around.
Lower-Cost Alternative: HP Envy Sleekbook (from $600)
HP Envy SleekbookThe HP Envy Sleekbook should appeal to value-minded parents and students who favor a low-cost alternative to pricier Ultrabooks.
These 14- and 15.6-inch laptops are 0.8 inch thin, weigh less than 4 pounds, and come in snazzy black and red designs. Students can play games confidently on their Sleekbooks too, thanks to the integrated AMD Radeon graphics.
The 15.6-inch Sleekbook, based on an AMD CPU, starts at $600, and the 14-inch Intel-based version starts at $700.
Dorm-Friendly Portable: Lenovo IdeaPad U310 ($800)
The U310 features an Intel Ivy Bridge Core i5 processor, 4GB of RAM, and a hybrid storage setup (a 32GB solid-state drive and a 500GB hard drive). Style-conscious students can choose from a range of colors for this lightweight laptop.
Solid Choice: Vizio Thin + Light ($900)
Vizio Thin + Light The Vizio Thin + Light Ultrabook is a sleek, lightweight 14-inch laptop that students will be proud to carry around.
Aside from praising its elegant good looks, PCWorld’s review of the Thin + Light found that it performs really well both overall and in tasks that students will be doing most: surfing the Web and running office-productivity software.
The high-resolution (1600-by-900-pixel) display is welcome, but the system lacks a built-in memory card reader and an ethernet jack—if your student is staying on campus, you should make sure that wireless networking is available in the dorms.
|Laptop||Screen size (inches)||Processor||Screen resolution||Graphics||Storage||Weight (pounds)||Est. battery life (hours)||Price|
|Acer Aspire Timeline Ultra M5||14.0||Intel Core i5||1366 by 768||Nvidia GeForce GT 640M with 1GB RAM||Hybrid 20GB SSD/500GB HDD||4.3||8||$730|
|Acer Aspire Timeline Ultra M5 1||15.6||Intel Core i5||1366 by 768||Nvidia GeForce GT 640M with 1GB RAM||Hybrid 20GB SSD/500GB HDD||5.1||8||$830|
|Alienware M17x R4 1||17.3||Intel Core i7||1600 by 900||Nvidia GeForce GT 660M with 2GB RAM||500GB||9.6||5||$1500|
|Apple MacBook Air||11.0||Intel Core i5||1366 by 768||Intel HD 4000||64GB SSD||2.4||5||$1000|
|Apple MacBook Air||13.0||Intel Core i5||1440 by 900||Intel HD 4000||128GB SSD||2.96||7||$1200|
|Asus Zenbook Prime UX31A||13.3||Intel Core i5||1600 by 900||Intel HD 4000||128GB SSD or 256GB SSD||2.9||7||$1100|
|Asus Zenbook Prime UX32VD||13.3||Intel Core i7||1920 by 1080||Nvidia GeForce GT 620M with 1GB RAM||Hybrid 24GB SSD/500GB HDD||3.2||7||$1300|
|Dell XPS 14||14.0||Intel Core i5||1600 by 900||Intel HD 4000||Hybrid 24GB SSD/500GB HDD||4.6||11||$1100|
|HP Envy Sleekbook||14.0||Intel Core i3||1366 by 768||Intel HD 3000||500GB HDD||4.0||8||$700|
|HP Envy Sleekbook||15.6||AMD 2nd Generation||1366 by 768||AMD Radeon||320GB HDD||4.0||9||$600|
|Lenovo IdeaPad U310||13.3||Intel Core i5||1366 by 768||Intel HD 4000||Hybrid 32GB SSD/500GB HDD||3.7||8||$800|
|Vizio Thin+Light||14.0||Intel Core i3||1600 by 900||Intel HD 4000||128GB SSD||3.4||7||$900|
All laptops have 4GB of memory except where noted. 1 6GB of memory.
According to our sources Apple is planning to launch iPhone 5 on October 7th and pre-orders for the iPhone 5 will begin on September 29th or 30th. The iPhone 5 is expected to have an 8MP rear-facing camera, sport the A5 processor that currently runs the iPad 2, and perhaps increase the size of the screen by using and edge-to-edge screen design.
According to our sources, Apple has been weighing between launching the new iPhone on October 7th or October 14th, but with the product’s latest stages of pre-mass-production currently moving along nicely, Apple is presently shooting towards a launch on the 7th. On top of this, unlike with the iPad 2, Apple plans to offer pre-orders for the new iPhone.
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Apple currently plans to begin pre-orders for their next-generation smartphone in the final days of September. The company has still not finalized the pre-order start date, but is debating between Thursday, September 29th and Friday, September 30th. The 30th seems more likely at this point according to one of our sources.
A little Wi-Fi management can increase your battery life significantly
It is a well-known fact that keeping the Wi-Fi radio on is one of the major factors in reducing a notebook or tablet’s battery life. But at times it is not practical, as many notebooks or tablets come with Wi-Fi only connection possible – and you need to get your work done on time. A solution from Justin Manweiler and Romit Roy Choudhury, students at Duke University, might come to help.
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Both of the students jointly released a paper called “Avoiding the Rush Hours: Wi-Fi Energy Management via Trafﬁc Isolation” that explains ways to manage the Wi-Fi connection constructively so that it only uses the energy it needs. The way Liliputing explains it is that when there are a number of Wi-Fi connections available, the Wi-Fi radio has to try harder to connect to any specific access point, ending up using more energy than required. That is because the radio has to keep trying to stay alerted in an effort to send data over the access point if other devices are connected to that as well.
This solution is a new system called SleepWell that allows the Wi-Fi radio to sleep while other devices are sending data over the same connection (Wi-Fi). This could reduce the energy usage by 38%-51% – as promised by the researchers. This could be a significant boost to the laptop battery life, and will ultimately affect your mobility with the system.