Ultrabook

Achilles' heel. The ThinkPad S440 is one of the newest ultrabooks from Lenovo: slim, powerful and enduring. With its current components, clever features and a matted multitouch display the Lenovo ultrabook might be able to put itself right at the top of the competition. We found out if it really does.
Intel Core i7-4500U | AMD Radeon HD 8670M | 14.00" | 1.9 kg

Stamina and Style? Acer’s latest touchscreen-equipped Ultrabook might seem a bit large for its sake, but its promise of great battery life and strong performance make a compelling argument nonetheless. Is it worthy of consideration?
Intel Core i5-4200U | Intel HD Graphics 4400 | 15.60" | 2.2 kg

Red Baron. After the Pro 11 we have a closer look at the 13-inch Red Edition. How much polish can an elitist business notebook handle? How much performance can the just 10 mm thin base unit keep cool? Our review gives the answers.
Intel Core i7-4500U | Intel HD Graphics 4400 | 13.30" | 1.1 kg

Haswell. The name of Intel's new CPU generation has been branded in our minds. After meticulous preparations, we reviewed 13 test samples with the new chip in June. Initially, we focused on the Core i7. However, Apple's new Air comes with a Core i5. In addition, we tested many new high-end GeForce models, from GTX 760M to GTX 780M combined with Extreme quad-cores.

Delicate Butterfly. The new Sony Pro series shines due to its impressive technical specifications. Our test model is slim and offers decent battery life and nice performance. It could very well be the ideal companion on-the-go. In our review, we will see what this model has to offer.
Intel Core i5-4200U | Intel HD Graphics 4400 | 11.60" | 860 g

IdeaPad plus touch. Since the advantages of Windows 8 only really come to the fore with a touchscreen, Lenovo installs this operating system on its U410 Touch. The IdeaPad is rather conservative otherwise.
Intel Core i5-3337U | NVIDIA GeForce 710M | 14.00" | 2 kg

Not quite your ordinary tablet. 11 becomes 13. How large does a slider convertible have to become in order to allow its user to work comfortably with Windows? How sturdy is the hinge? And what kind of performance levels can be expected from the Haswell ULV CPU? We've got the answers.
Intel Core i5-4200U | Intel HD Graphics 4400 | 13.30" | 1.3 kg

Tough choice. You want to buy one of the new MacBook Air models? Good, so you have already made your decision. But some agonizing questions remain: i5 CPU or the more powerful i7 chip? 128 GB SSD or even the 256 GB drive? Our review should give you some assistance.
Intel Core i7-4650U | Intel HD Graphics 5000 | 11.60" | 1.1 kg

Inexpensive business Ultrabook. The 21 mm thin business device from Asus has a 15.6-inch display and combines an Ivy Bridge processor, Nvidia's GT 740M and an SSD cache storage solution with a premium aluminum case. You can buy all that for just 650 Euros ($~851), but what are the drawbacks?
Intel Core i3-3217U | NVIDIA GeForce GT 740M | 15.60" | 2.3 kg

Handy touch-ultrabook. Asus upgrades a simple 15.6-inch office ultrabook with a touchscreen and calls the whole thing Vivobook S500CA. The laptop proves to be quite energy-efficient owing to the ULV processor and is to achieve satisfactory battery runtimes. Whether the Vivobook is compelling can be read in our test report.
Intel Core i5-3317U | Intel HD Graphics 4000 | 15.60" | 2.1 kg

Iconia basic. Windows alongside decent computing power packed in a quality aluminum tablet featuring a colorful and bright IPS screen. A keyboard-case combination is also included. There is barely a contender that can beat the current price of just below 600 Euros (~$769). Bargain alert?
Intel Core i3-3229Y | Intel HD Graphics 4000 | 11.60" | 1.3 kg

A gentle breeze. Not a beat too late in the circannual rhythm, Apple updates their MacBook Air series. New on the inside: Current Haswell ULV processors. Out of keeping with the trend Apple themselves initiated, the new Air doesn't have a higher resolution display this time; the panel remains the same. Are the updates enough for the device to deserve to be called "new"?
Intel Core i5-4250U | Intel HD Graphics 5000 | 11.60" | 1.1 kg

The perfect balance? Lenovo’s IdeaPad Yoga 11S is a combination of their Yoga 11 and Yoga 13, lifting elements from both to rebalance battery life, performance, and versatility. Was it worth the effort?
Intel Core i5-3339Y | Intel HD Graphics 4000 | 11.60" | 1.4 kg

Unlimited mobility. A tablet for the meeting, a notebook for the workspace - Lenovo's ThinkPad Helix is supposed to combine the advantages of both devices. The clever ultrabook hybrid ignores conventional wisdom concerning convertibles, leaving a lasting impression due to its mobility and office strengths.
Intel Core i5-3317U | Intel HD Graphics 4000 | 11.60" | 1.7 kg

Calm before the storm. The wait for Intel's Haswell generation shrunk the volume of our devices for review - we had a grand total of 15 test devices this month. But we certainly didn't have a dearth of exciting convertibles (an 18-incher!), elegant subnotebooks (IPS panel & Radeon HD 8570M), and even a flat business classic with an HD+ panel.

All-round ultrabook. Hewlett Packard now has a slim, 15.6 inch ultrabook that even allows playing up-to-date 3D games in its product line. Storage is not an issue either owing to the large hard drive. That sounds as if HP has built the perfect laptop. Our test reveals whether the ultrabook is really compelling.
Intel Core i5-3317U | NVIDIA GeForce GT 630M | 15.60" | 2.1 kg

Business with sound. Slim-business is en vogue. The Taiwanese manufacturer uses its aluminum unibody know-how from the Zenbooks and creates an impressive chassis. The keyboard features a long drop and the maintenance options are A-one. Regrettably, Asus blunders in one vital point.
Intel Core i7-3517U | NVIDIA NVS 5200M | 14.00" | 1.6 kg

A reimagined T Series. It is the thinnest and lightest ThinkPad T Series model to date, but does it retain the rigidity and longevity of its predecessors? Lenovo is betting big on a new slimmer design and revamped touchpad to attract the attention of Ultrabook customers. Find out in this review if these hardware tweaks have paid off.
Intel Core i5-3437U | Intel HD Graphics 4000 | 14.00" | 1.6 kg

Pixel-dense. Dell's 14-inch business ultrabook is now available with the sought-after display resolution of 1600x900 pixels. Is the price-competitive Latitude 6430u HD+ a viable alternative to the outrageously expensive Lenovo X1 Carbon?
Intel Core i5-3437U | Intel HD Graphics 4000 | 14.00" | 1.8 kg

Better displays. More and more test devices attract attention with decent contrast, high brightness and the wide viewing angles of an IPS solution. However, the winners do more than show what a notebook display is expected to deliver.

Inexpensive touchscreen Ultrabook. Though its low budget price of $699 or less can be misleading of its quality, the VivoBook S500CA is actually built surprisingly well with impressive looks. Can this Asus hold up in what is becoming an increasingly common category of touchscreen-enabled Ultrabooks?
Intel Core i5-3317U | Intel HD Graphics 4000 | 15.60" | 2.2 kg

The more the better! Samsung packs the Series 7 flagship in an aluminum housing and equips it with a powerful Core i7, a dedicated AMD graphics card, a large SSD and a multi-touch Full HD IPS display. A bit over the top? We have thoroughly tested this good piece of hardware for you…
Intel Core i7-3537U | AMD Radeon HD 8570M | 13.30" | 1.7 kg

The ultimate superlatives. Innumerable devices found their way to Notebookcheck's tests again in March. We would like to supply an overview of premium devices with this article and facilitate any potential buying intentions.