Where the Dell Chromebook 11 disappoints is the screen. The glossy finish is highly reflective, yet looks dull and flat. Vertical viewing angles aren’t great and there’s a touch of grain. Measuring performance with our colorimeter revealed the panel’s maximum brightness to be a disappointing 208cd/m2, and the contrast only 360:1. Such figures aren’t uncommon on budget laptops, but they’re a long way short of the screens we’re seeing on sub-£200 tablets these days.Perhaps more significantly, screen quality also falls well short of the HP Chromebook 11 – a machine previously withdrawn from sale for a while due to problems with faulty power supplies, but now back on Google Play at £229.Still, the Dell’s screen is similar to its closest rival, the Acer C720 – which is slightly brighter, but has worse contrast – and the rest of the package is superior to Acer’s offering. The Scrabble-style keyboard has a crisper, more solid feel and the broad touchpad is responsive; although we’ve never liked integrated buttons, its heavy, positive click is just about acceptable.Build quality, as you’d hope from a product designed for the classroom, is excellent. The lid is stiff, its glossy front protecting the LCD beneath from heavy-handed prodding. A rubberised coating surrounds the keyboard and completely covers the wristrest, which makes for a comfortable touch-typing platform. Beneath the laptop are two long strips of rubber, which do a fine job of preventing the laptop from slipping around on a desk or your lap. Despite the solid feel, this isn’t a heavy machine, weighing a mere 1.3kg and measuring 23mm thick.

With its strong performance, creditable ergonomics and low price, the Dell Chromebook 11 is a great option for any student looking for a budget workhorse – especially since, with the integration of the Quickoffice beta into the Chrome OS Files app, offline editing capabilities are now much stronger than before. At this cheaper end of the Chromebook market, we prefer it to the Acer C720.Now that the HP Chromebook 11 is back on sale, though, it’s that model that remains as our favourite Chromebook. Although it can’t compete with this Dell on performance or battery life, its display is vastly superior, and that makes a real difference.It’s been almost a year since AMD’s Llano platform made its mobile debut, and now its successor has landed in PC Pro’s Labs. Promising twice the performance per watt of the previous generation, an upgraded graphics core and a whole host of improvements, AMD’s pinning its hopes on Trinity in the battle to win back market share from Intel.It’s a major move forward for AMD’s mobile chips. Where AMD’s Llano used a tweaked version of the aged Phenom II architecture, the new generation sees AMD’s updated Bulldozer technology, codenamed Piledriver, make its debut alongside revisions of the integrated Radeon HD 7000 GPUs. It’s this partnership that forms the new Trinity-class accelerated processing unit (APU).

Trinity is still built on a 32nm process, but the transistor count has swelled from Llano’s 1.178 billion transistors to 1.303 billion in the new chips. AMD has added support for the AVX, AVX 1.1 and FMA3 instruction sets, and memory support takes a step forward, too, with the Trinity APU now capable of harnessing DDR3 at up to 1,600MHz and supporting low-voltage, 1.25V DIMMs. Power efficiency is a driving force behind the new design, with power gating, dynamic voltage and speed control on offer across the whole chip, while individual CPU or GPU cores can be powered down when idle. AMD’s Turbo Core technology also reaches its third generation in the Trinity APU. Turbo Core 3 intelligently adjusts clock speeds on the CPU and GPU, clocking down the GPU and boosting the CPU for single-threaded CPU-based operations, or limiting the CPU to its rated speed while delivering more power to the GPU for gaming.Trinity’s GPU has received a welcome upgrade too. The Radeon HD 7000 Series GPUs tout up to 384 stream-processing units apiece, and offer DirectX 11 and Shader Model 5 support as well as a significantly improved tessellation engine. AMD is keenly pushing the GPU’s computing capabilities, with the redesigned GPU cores providing higher GPU compute performance than the Llano generation. And, as ever, the integrated GPUs are capable of combining forces with a discrete AMD GPU in CrossFireX mode.

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The new architecture will roll out across the A6, A8, A10 and FX ranges, including dual- and quad-core parts, but the new architecture also brings with it the potential for a whole host of new low-powered APUs. Where the most efficient Llano APUs had a minimum TDP of 35W, the new Trinity APUs span 17W, 25W and 35W TDP designs suitable for everything from budget laptops, through to the new HP-branded Ultrabook rivals, Sleekbooks, right up to enthusiast-class gaming laptops.The Dell Chromebook 11 proved to be a zippy, cost effective Chromebook in our recent review, but how does it measure up to last year’s equally inexpensive Acer Aspire C720? Below we’ve pitted both devices head-to-head, taking into account design, connectivity, specifications, performance and screen quality to determine which is the superior Chromebook. See also: What's the best budget laptop of 2014? Under the hood both the Dell Chromebook and Acer Aspire have very similar core hardware, but there’s a marked disparity in the quality of their physical design. The Acer Aspire’s looks don’t quite live up to its name; the chassis possesses a slightly drab, grey matte plastic finish and, while build quality is fine for the most part, there’s a little more flex to the base and lid than we’d have liked. The keyboard is similarly serviceable, yet unsatisfying, with insubstantial-feeling keys.

The Dell Chromebook 11 is the clear winner in this department and, as befits a Chromebook designed for classroom use, it’s gratifyingly rugged, with a stiff, unyielding lid. Plenty of concessions towards convenience have been made as well; there are thick rubber strips under the base to prevent it from sliding on smooth surfaces and there’s also a rubberised coating that surrounds the keyboard for more comfortable typing, a nice design feature that the Acer Aspire does not share. They keyboard is crisp and responsive and though the touchpad features integrated buttons, it isn't as bad as many we've used.Here’s where the contest starts to get considerably tighter, as both the Dell Chromebook and Acer Aspire boast some generous connectivity options. Both Chromebooks have an almost identical selection of ports, boasting a 3.5mm audio jack, full-sized HDMI and SD card ports. The Acer has one USB 3 port and a USB 2 port, while the Dell touts two USB 3 ports and both devices are equipped with dual-band Wi-Fi and Bluetooth 4.

It’s a similar story specs-wise, with both models housing an identical dual-core Intel Celeron 2955U CPU running at 1.4GHz with 16GB flash memory. However, while the Acer Aspire is supported by 2GB RAM, the Dell Chromebook pips it to the post by supplying 4GB.With almost identical specifications elsewhere, you can bet that the core hardware of both Chromebooks won’t differ by a wide margin. Both are nippy in real world use with a cold boot time of just seven seconds. SunSpider and Peacekeeper benchmarks yielded comparable results, with the Acer Aspire coming out slightly ahead in the Peacekeeper browser benchmark, with 2,906 to the Dell’s 2,767. The Dell scored better in a Sunspider JavaScript test with 323ms compared to the Acer’s 357ms, but the difference between these results is marginal. Battery life was a similar story. In a looping video test with both Chromebooks’ screens set to 120cd/m², the Acer Aspire powered on for 5hrs 36mins before the battery ran out of juice, while the Dell kept going for slightly longer, at 5hrs 54mins.While both Chromebooks have performed well so far, it was in screen quality that they fell down. Both screens were relatively dim, the Dell’s backlight topping at 208cd/m² and the Acer managing 240cd/m² but we were really disappointed by the dismally low contrast ratio of both devices, measuring at just 360:1 and 222:1 respectively, leading to flat, washed-out images.

While neither screen impressed us much, the Dell’s reflective glossy finish, coupled with its less-than-stellar maximum brightness, means outside use is out of the question and even just harsh indoor lighting can be a real obstruction.Despite possessing a lot of the same hardware, in the end we feel the Dell Chromebook 11 provides just that little bit more bang for your buck than the Acer Aspire C720. At £199 the Dell is £20 more expensive than the Acer Aspire’s current market price, but it’s more durable, nicer to look at and ever-so-slightly better equipped. Plus, there'll be a cheaper version with 2GB RAM available from the end of June.It's an exciting thought isn't it? Google is shouting from the rooftops about its self-driving car progress. But what if Apple was to start work on one too? Well, Jonny Ive, has sent the tech media into overdrive (cracking pun intended) by telling the New Yorker "There are some shocking cars on the road". We investigate exactly how likely the prospect of Apple making an iCar actually is.The cloud storage war is heating up. This week Microsoft took a direct swipe at fellow-heavyweight Dropbox, by offering 100GB of free storage to its users. Great news for the consumer, but bad news for Dropbox. Find about more about what's involved and how to claim your free 100GBs.The world's biggest laptop manufacturer has been installing adware onto its laptops under the guise of software called Superfish Visual Discover. The software - as well as being annoying - could potentially leave customers vulnerable to cyber criminals wishing to steal their personal data.

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Remember Facebook buying Oculus Rift last year? Well Facebook has this week revealed what it's going to be doing with the company. Unsurprisingly the plans are to combine VR with Facebook, to bring the next level of sharing experiences with each other. Read about how you will be seeing annoying VR pictures of your friend's babies in the next few years.The notoriously safety-conscious car manufacturer, Volvo, has announced its plans to join the growing crowd of driverless cars. Little is known about how or what software will actually be in use, but the Swedish car company plans to let loose 100 self-driving cars on the roads of Gotehnberg by 2017. Here's what you need to know.

Let’s take a moment to mark the passing of Windows RT. As the Surface 2 – Windows RT’s swansong – trudges to an early grave, haunted by the spectre of embarrassing sales figures, the Surface 3 is tasked with getting Microsoft’s Surface family back on track. And it looks like it might just have succeeded. With full-fat 64-bit Windows finally taking the place of the not-so-sadly departed RT, Microsoft has redeemed itself by creating one of the best Windows tablets yet. See also: What's the best laptop of 2015?The Surface 3 impresses from the off: it’s just as classy and lovingly crafted as we’ve come to expect from Microsoft’s Surface brand. There’s the same VaporMG metal construction – all bevelled edges, elegant straight lines and brisk curves – and it feels solid and tautly constructed. It turns out that a miniaturised Surface Pro 3 is a very lovely thing indeed.

The Surface 3 is just as attractive as its big brother, then, but it has other talents. Far easier to grab and carry around in one hand than the Pro, the Surface 3 is a device that demands to be taken everywhere. Sure, it isn’t as portable as an iPad Air 2, but at 9.3mm thick and weighing 622g, it’s still light compared to many full-sized Windows tablets.Clasp on the optional Type Cover, meanwhile, and the pair weigh in at a creditable 884g – a combination that’s a touch lighter even than the feathery 923g Apple MacBook.Microsoft has done a cracking job of shrinking the Surface 3 without diluting the qualities that made the Pro so special. Retaining the 3:2 display ratio employed on the Surface Pro 3 is a masterstroke: there’s no doubt a taller, squarer-shaped screen makes for a more spacious, usable display in both portrait and landscape orientations. It’s a canny choice for a hybrid device designed to flit seamlessly between tablet and laptop roles.

1. http://oowerusern.blogas.lt/
2. http://www.blogstuff.co.uk/folgenden/
3. http://www.birdwatch.co.uk/blogs/blogShow.asp?blog=566
4. http://www.nichtraucher-blogs.de/blogs/akkusmarkt/

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