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ASUS N50V Battery

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ASUS N50V Battery

The last time we reviewed a ThinkPad T series was the ThinkPad T410 back in December 2010. In terms of design, nothing's really changed. The ThinkPad T420 is heavy, at 5.2 pounds for a 14-inch laptop, and its body is nearly 1.2-inch thick. Even so, the T420 isn't as hard to heft as you'd expect based on how it looks. What you gain here is durability, port selection, and a surprisingly good mix of speed and battery life. With its slightly faster-than-average Core i5-2520M CPU, the T420 rivaled Core i5 competitors in our benchmark tests, and the included Nvidia graphics are good enough to play a game like Street Fighter IV at medium settings. The battery life topped 7 hours in our CNET tests, besting the Apple MacBook Pro.As you'd expect, the ThinkPad T420's keyboard is very comfortable: it's the Lincoln Town Car of keyboards, or a comfy orthotic shoe. It may not be sexy, but damned if it isn't a great keyboard for writing. However, the plethora of additional and strangely laid-out function and teleconferencing buttons can overwhelm. The Esc and Delete keys are large, vertical, and elevated above the rest of the keyboard. That's odd, too, but not if you use ThinkPads. Overall, it feels like a command center, and clearly was meant to be thought of as such.

The touch pad isn't very wide for multitouch, but its stippled surface has great traction and sensitivity. Too many buttons above and below the pad may be good for accuracy in tight quarters like on planes, but they cramp the pad's real estate. Multitouch gestures are tough to pull off. Out of curiosity, I gave that red rubber trackpoint another try. I have to admit, there's something to appreciate in the trackpoint's simple efficiency, even its accuracy, but it's not for everyone, and the rubber point can throw off a hunt-and-peck touch-typer such as myself.Again, this is clearly a laptop made for those who don't want change, who want a laptop that looks the same on the outside as a product from several years ago. If you want change, get a ThinkPad Edge. At least the T420's extra vertical thickness has been well-used to stack ports--a DisplayPort sits above a USB 2.0 port on one side, while USB ports and SD card/ExpressCard slots are stacked on the other.

ThinkPads have always boasted good displays, and the matte-finish 14-inch display on this model was crisp and bright and easy to read. The 1,600x900-pixel resolution is a step up from the standard, offering finer text resolution and more screen real estate, without shrinking icons or menus too much. It also costs $50 as an upgrade over the standard 1,366x768-pixel display. The T420's hinges open the screen up a full 180 degrees from the base for extra flexibility. The stereo speakers are fine for videoconferencing or office functions, but this isn't a wonderful movie-watching laptop. Streaming Netflix movies looked a little washed-out. Then again, you're not supposed to be using a work laptop like this for movies and games, are you? (In case you're curious, Street Fighter IV did play astonishingly well using the T420's Nvidia Optimus NVS 4200M graphics, running at 39.8 frames per second at native 1,600x900 resolution.)

A high-def 1,280x720 Webcam and included audio optimization settings give the ThinkPad T420 a better-than-average set of teleconferencing tools, although most laptops these days are more than capable of some basic Skype, especially if you wear a headset with a mike. That 720p Webcam, however, is a $30 upgrade that came standard in our configuration.The ThinkPad T420 is flush with ports that would make any owner of older legacy equipment gleam: three USB 2.0 ports (one of them powered), one USB 2.0/eSATA combo, VGA, DisplayPort, mini FireWire, and even an ExpressCard slot. However, it lacks USB 3.0 and HDMI, both of which are more useful in modern work environments.The ThinkPad T420 offers a number of upgrade options, including some nickel-and-dime upgrades ($20 extra for Bluetooth, $20 for a fingerprint reader, $30 for an HD Webcam, $55 extra for WiMax, $50 for a 1,600x900-pixel display as opposed to 1,366x768 pixels) that can add up quickly. The base T420 comes with a second-gen Intel Core i3 processor, but can be upgraded to our version's Core i5, and even higher to a 2.8GHz Core i7-2640M, which will cost an extra $190 over our midrange model. RAM can be upgraded to 8GB, and you can choose a 500GB hard drive of 5,400rpm or 7,200rpm, or a solid-state drive (SSD) of 128GB for an extra $170, or 160GB for $200.

For the T420, the inside is what counts, and its specs and performance live up to what you'd expect in a mainstream laptop. Its performance closely matched the Dell XPS 14z with a Core i7 CPU, despite our version of the T420 only having a 2.5GHz Core i5-2520M processor. This is a second-generation Sandy Bridge CPU, not one of the upcoming Ivy Bridge processors. It would be more than enough for anyone looking to do some office multitasking.The included Nvidia Optimus graphics aren't earth-shattering, but provide a nice boost over integrated Intel graphics. They're enough for moderate graphics work and even some gaming.Ultrabook city is booming, with every computer manufacturer arriving in town on the back of an Intel-powered cart, hoping to strike a rich vein of laptop gold.Never one to be left out of a goldrush, Toshiba has thrown together the Z830 -- a slim and very light laptop with a more understated look that would suit the travelling prospector professional. But will it offer enough to take the shine off the glittering gem that is Asus Zenbook UX31?

Our model came with an Intel Core i5 processor and 6GB of RAM. It's available now for £1,000. The Z830 is instantly recognisable as part of the ultrabook gang due to its extremely svelte physique. At a mere 8.3mm at the front, it's certainly a very slim machine and at 17mm at the rear, it's one of the slimmest laptops available.This tiny size means you can do away with carrying a bulky laptop bag around with you, as it will easily slide into the most slender of messenger-style bags, nestling comfortably against your notepads without causing any embarrassing bulges.With a weight of only 1.1kg, it's very light too, undercutting the weight of the Asus UX31 by 200g and making the Z830 a light traveller's dream. The weight reduction has mostly been made in the chassis -- Toshiba has constructed the Z830 from magnesium, rather than the aluminium used on the UX31.Sadly, that has resulted in the build quality of the Z830 seeming somewhat less than perfect. The lid is extremely thin, offering a frightening amount of flex -- something that isn't present at all in the aluminium UX31. There's flex in the keyboard tray too, making the whole machine feel much less sturdy than we'd like.

Toshiba has obviously settled on a trade-off between weight and build materials, and it's done an admirable job in reducing the weight, but we'd definitely like it to be firmed up in places. The keyboard is made up of square, isolated keys that are spaced well across the chassis resulting in a comfortable typing experience. We were able to type for long periods without feeling the tell-tale aches we'd experience on less comfortable keyboards. If you're planning on bashing out some long documents for work, rest assured it won't be the keyboard that slows you down.The trackpad is very responsive, which makes for a swift web-browsing experience, but it's pretty small -- considerably smaller than the clickable trackpads found on the UX31 or the 13-inch Apple MacBook Air. The two buttons are easy to click and if you really need more freedom in your scrolling, you can just hook up a USB mouse.

On the looks front, the Z830 doesn't have the same sleek, stylish appeal of the UX31 or the Air, but it's still pretty smart. It's perhaps more appropriate in a professional, business environment than its flashier ultrabook brethren.Unlike the Zenbooks and the Air, the Z830 is only available with a 13.3-inch screen, so if you're after an 11-inch model to whisk away on your travels, you're out of luck. 11-inch machines are less of a necessity in the professional realm, as long documents and spreadsheets are easier to edit with a larger screen, so it's understandable Toshiba hasn't opted for a smaller size.What's less forgivable though is the relatively poor resolution on offer. The Z830's 13.3-inch display has a resolution of 1,366x768 pixels -- fairly standard for a laptop of this size, but both the UX31 and 13-inch MacBook Air offer 1,600x900-pixel screens. It's a shame Toshiba hasn't tried to keep in step with the competition.Tosh has given it a matte coating though, which significantly reduces reflections, making it great for use under bright lights or direct sunlight. It does mean, however, that the screen lacks the punchy colours and depth of glossy displays, resulting in pictures that often look quite washed out. If you want to catch up on some Hannah Montana while you're away, the Z830 isn't going to do them much justice. Shame.

Announced today, the Thinkpad X220 convertible tablet/notebook will join Lenovo's upcoming X220 notebook. Both products are the latest additions to the company's X series of ultraportable notebooks and tablet/notebooks with 12.5-inch screens, and both are slated to reach store shelves next month.The X220 convertible starts at $1,199, while the notebook's starting price is $899. Though Lenovo is targeting both computers to individuals as well as companies, they are designed primarily for business users.Outfitted with Sandy Bridge, the X220 convertible offers a choice of an i3, i5, or i7 processor. Buyers can opt for either a solid state drive with up to 160GB of storage or a conventional hard drive with up to 320GB. Memory can go as high as 8GB. It weighs in at 3.88 pounds.Like the notebook, the X220 convertible includes three USB ports, with one designed as an always-on port so people can charge a phone or other device without powering up the computer. A 720p HD Webcam, digital microphone, and an Intel Wi-Fi/WiMax adapter are included as well.

Notable to both the convertible and the notebook are sharp boosts in battery life. The X220 notebook offers 15 hours of battery life with a 9-cell battery--and up to 23 hours when a 6-cell external battery pack is added. The battery life on the convertible is lower, but it still offers 9 hours of life with a 6-cell battery--and 16 hours by adding on the 6-cell external pack.The convertible's predecessor, the X201, offers 3.5 hours of battery life with a four-cell battery and 7.9 hours with an eight-cell battery.Preston Taylor, worldwide product marketing manager for Lenovo's ThinkPad brand, said in an interview that Lenovo relied on both Intel and its own team to coax the boost in battery life over previous models. The enhanced power management found in Intel's Sandy Bridge architecture accounted for about 50 percent of the increase in battery life. But the other 50 percent came directly from Lenovo.Lenovo designed both the convertible and the notebook to dial down or completely turn off unused components to focus on the energy required by the components in use. One example cited by Taylor: if people are streaming videos or music over the Web, they're not using the computer for much else, so there's no need for the hard drive to keep spinning or for some of the ports to keep drawing juice.

  1. http://akkusmarkt.jimdo.com/
  2. http://blogs.elle.com.hk/akkusmarkt/
  3. http://wwwakkusmarktcom.doodlekit.com/blog

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