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A $300 laptop that charges in two hours in the sun has been created by a Canadian company, to give African businesses and students a computer that will keep working through blackouts.The Sol laptop runs Ubuntu on an Atom CPU, and features four fold-out solar panels. In direct sun, the panels charge the laptop in about two hours, offering up to ten hours of battery life - handy for parts of the world with unstable electricity.Created by Canadian telcoms firm WeWi, the Sol is set to come off the production line in two months for its first buyers in Ghana, and the creators are in talks with schools in the area. With that market in mind, the company hopes to get the price even lower than $300.

A. We have a subsidiary in Ghana, where we do government contracts, things like that. We talked about doing an education project... to deliver the syllabus digitally to teachers' computers. Being in Ghana, we noticed that there are a lot of power outages happening almost daily, or very consistently. Even in Accra, a large city in Ghana, you're left with no electricity.Obviously, for us, having no electricity is something really weird to think about, but the more we looked into it, we realised there are more and more countries that don't have that.A. It's very simple, and definitely not rocket science - we didn't reinvent the wheel. We basically made sure that everything works together well, and optimised the hardware to work with the amount of [power] output we were able to receive... We wanted to package something that would be really easy and affordable.

A. It's not a gaming machine! But, at the same time, we tried to get the best of what we could - minus the graphics, because the graphics cards take a lot of electricity, it will be a comfortable computer to use.The standard model runs an Intel Atom, a 1.8GHz dual-core processor. Having said that, Haswell is something we're implementing in the North American model.It's not an amazing computer, but for people who are just getting into computing, using web tools or word processors, it's absolutely perfect. For the price, we've managed to really package a nice computer - especially with the four solar panels, which are expensive.A. It takes two hours to charge, but obviously it has to do with the amount of sun - if it's not cloudy. The best sun is direct from the top, but what we've tested, a bit more than two hours will do it.The Mac mini is an easily overlooked little platform, not merely because it lacks the attention-grabbing display of the Apple’s iMac and laptop systems, but also because Apple barely bothers to advertise it. Yet for certain markets it’s the ideal format: businesses will appreciate the ability to reuse keyboards and monitors when provisioning new hardware, while home users may be tempted by the compact, almost silent design (it’s rated at 12dBA while idle) that makes the Mac mini well suited to a personal desktop or media centre role.

From the front, the 2014 Mac mini looks identical to the 2012 model, which is to say tastefully featureless. Not much has changed around the back, either: the four USB 3 sockets, Gigabit Ethernet, HDMI port and SDXC card reader are all still here, alongside twin 3.5mm jacks for audio input and output. The FireWire 800 port has gone, however, replaced by a second Thunderbolt port, and both connectors now support the faster Thunderbolt 2 standard. Businesses with legacy FireWire drives will therefore need to throw in an extra £25 for Apple’s Thunderbolt-to-FireWire adapter, but that’s no biggie.The other changes introduced with the new mini are even less conspicuous, but arguably more significant. One positive improvement is a wireless upgrade from 802.11n to 802.11ac. A less welcome change is a switch to soldered RAM, so once you’ve chosen your specification – 4GB, 8GB and 16GB configurations are offered – you can’t upgrade it later.

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Your processor options have been updated too, from Ivy Bridge to Haswell. Dual-core, low-voltage U-series processors are the order of the day, so the new models will be outpaced by most current iMacs – and by the high-end 2012 Mac mini models, which came with quad-core CPUs – but there’s still a decent wodge of power at hand. The base model comes with a Core i5-4260U, the same processor as found in current MacBook Air laptops, and although it’s advertised as running at only 1.4GHz, Turbo Boost almost doubles the frequency to 2.7GHz when there’s work to be done.In our Real World Benchmarks, this drove the latest MacBook Air to a respectable score of 0.7, and we’d expect to see a similar result from the low-end mini. The mid-range 2.6GHz mini, based on an Intel Core i5-4278U CPU, pushed up to a very creditable Overall score of 0.77; at the top of the range you can also upgrade to a 2.8GHz Core i7-4578U if you so desire.

The newer processors also come with updated GPUs – Intel HD Graphics 5000 on the base model, Iris Graphics 5100 on the more expensive ones. Even the Iris graphics aren’t enough to elevate the Mac mini into a gaming rig, however – on a Full HD display, we had to drop the detail settings on our Crysis benchmark down to Medium to average a just-playable 25fps.Overall, there’s not much to distinguish the new Mac minis from the old, save for one key piece of good news: soldering the RAM, ditching the FireWire controller and switching to dual-core processors has enabled Apple to drop the price of the base model to £399 – a clear hundred quid cheaper than its predecessor. The 500GB hard disk and 4GB of RAM included in that price may not satisfy power users, but for everyday office or personal computing it adds up to a tempting little bundle.For more demanding users, sadly, prices ramp up quickly. If you want to add an extra 4GB of RAM, Apple charges a scandalous £80, and stepping up to a 1TB Fusion Drive adds a further £200 to the bill. The mid-range 2.6GHz Core i5 models start at £569, although this does include a 1TB mechanical disk and 8GB of memory. The top-end 3GHz Core i7 unit with 16GB of RAM and a 1TB Fusion Drive will set you back £1,119, while the dual-drive server model has been discontinued.

Perhaps the reason Apple doesn’t make more noise about the Mac mini is that if it’s right for your needs, you probably already know about it. In recent years, though, cheaper Windows-based rivals such as the Intel NUC have provided stiff competition. Now, casual users who have hankered after a Mac have a more persuasive entry point, and cost-conscious offices could finally be won over too. For professionals, however, there’s not much here to get fired up about, especially since IT departments can no longer save money by upgrading the RAM themselves.The 11.6in Satellite Pro NB10-A is aimed at schools and businesses seeking a sturdy, functional Windows 8 laptop; a glance is all it takes to confirm that Toshiba has put practicality first. The laptop is finished in tough, matte-black plastics, and the 1.3kg chassis feels like it would survive a serious amount of punishment. See also: what's the best laptop you can buy in 2014?

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Toshiba Satellite Pro NB10-A: Display and touchscreen quality The glossy 11.6in touchscreen offers a resolution of 1,366 x 768, and it works perfectly well, responding to edge-swipes and finger-taps reliably and accurately.Image quality is a little more patchy. Contrast is what we'd expect from a £300 laptop at 260:1, but as Toshiba has used a TN panel, viewing angles are narrow and colours are muted. Brightness is low, too, with the LED backlight topping out at a modest 195cd/m2, and this makes it difficult to see the screen in direct sunlight. Connectivity is a high point. Despite the Satellite Pro NB10-A’s low price and compact dimensions, it’s better appointed than many Ultrabooks at several times the price. Toshiba has found room for both HDMI and VGA video outputs, a 10/100 Ethernet port, SD card reader, two USB 2 ports and a single USB 3 port. A panel on the underside is removable with a single screw, and this gives access to the 2.5in HDD bay and the two RAM slots. http://www.batteries-pc.com/hp.html http://www.batteries-pc.com/hp.html

Inside, the Toshiba is equipped with a 2GHz Intel Celeron N2810 CPU, 4GB of DDR3L RAM and a 500GB HDD. The Celeron CPU is based on the same architecture as Intel’s Bay Trail Atom processors, but equipped with two rather than four cores. A result of 0.3 in our Real World Benchmarks isn't lightning-quick, but it reflects enough power for most office applications.Stamina, however, is limited by the tiny, removable 24Wh, 2,100mAh battery. In our light-use test, the Toshiba ran dry after only 4hrs 22mins, so you'll need to factor in the cost of a spare battery if you're intending to use it on the go. Ergonomics, meanwhile, are something of a mixed bag. The touchpad works without fuss, and the dedicated buttons are a sensible choice. We’re not so convinced by the keyboard, however – the Scrabble-tile keys are a little too small for larger hands, and feel dead and unresponsive whilst typing. The placement of the Page Up and Page Down keys make them easy to press by mistake as well.