HP EliteBook Revolve 810 vs Dell XPS 12 vs Apple MacBook Air :Who is the king?

 HP EliteBook Revolve 810                                                                                                                                                                 The 11.6-inch Gorilla Glass 2-covered touch display feels great, looks sharp, and has great viewing angles, but it has only a 1,366x768-pixel resolution. That doesn't matter quite so much for most everyday tasks, but keep in mind that other 11-inch laptops like the Sony Vaio Pro 11 and ThinkPad Helix (and even the 10-inch Surface Pro) all have 1,920x1,080-pixel resolutions.A compact magnesium alloy body and sturdy design make the EliteBook Revolve 810 a great laptop to work on.

But, Disappointing battery life, high price, and slightly thicker body than more consumer-targeted systems.

The bottom line: HP’s EliteBook Revolve 810 is a good first step toward a very portable business laptop-tablet hybrid, but lack of a killer battery life hurts it.                                                                                               Specifications

ProcessorCore i5 i5-3437U / 1.9 GHz ( 2.9 GHz ) ( Dual-Core )

Memory4 GB / 12 GB (max)

Hard Drive128 GB - Serial ATA-300

Operating SystemWindows 8 Pro 64-bit Edition

Display Type11.6 in

Max Resolution1366 x 768 ( HD )

Graphics ProcessorIntel HD Graphics 4000

Optical DriveNone                                                                                                                Price $1,449                                                                                                                      VS                                                                                                                          Dell XPS 12                                                                                                                                                                                                The Dell XPS 12 is a thin, powerful, very cleverly designed touch-screen convertible that flips into multiple screen positions.This machine’s key feature is a 12.5-inch touchscreen with a native resolution of 1920 by 1080 pixels that pivots inside its aluminum frame—just as on the original. Open the lid, and you can use the computer as you would any other notebook. You simply push the top front or bottom back of the display to pop it out of its frame, and then flip it over and close it to convert the machine into a tabletThe biggest improvement, though, lies in battery life. The Ivy Bridge version of the XPS 12 provided 5 hours of streaming video, but that figure rose to a 6 hours and 45 minutes when we tested again with the same test.The Dell XPS 12 is one of the most powerful Ultrabooks you'll find. It might be heavy and awkward as a tablet, but when you consider the value that's on offer, with the blistering processor, 8GB of RAM and 256GB SSD drive, there's more than meets the eye..

But, For all the hype about touch and tablets with Windows 8, the XPS 12 still works better as a laptop than as a slate. Its battery life is on the low side.

The bottom line: Dell has revamped its rotating Duo laptop concept into the much-improved XPS 12, but like most convertibles, it makes a better laptop than tablet.

Windows 8 (64-bit); 1.9GHz Intel Core i7-3517U; 8GB DDR3 SDRAM 1,333MHz; 32MB (Shared) Intel HD 4000; 256GB Lite-On IT SSD                                                                                   Specifications

ProcessorIntel 3rd Gen Core i5 3317U / 2.6 GHz

Memory4 GB

Hard Drive128 GB

Operating SystemMicrosoft Windows 8

Display Type12.5 in

Max Resolution1920 x 1080

Graphics ProcessorIntel HD 4000

Weight3.35 lbs                                                                                                                                                               Price;$1,199.99                                                                                                                                             VS                                                                                                                                                      Apple MacBook Air                                                                                                                            New Intel fourth-gen CPUs help the updated MacBook Air achieve amazing battery life. The multitouch trackpad is still the industry's best, and even better, the 13-inch MacBook Air now starts at $100 less than the previous model.                                                                                                                                                  

Performance:

The new Haswell processors use very little power, giving the 2013 13-inch MacBook Air and absolutely stunning battery life. In our test, in which we streamed the live BBC News channel feed on iPlayer over a wireless network, the laptop lasted for nine hours. That's significantly better than the 11-inch MacBook Air's 7 hours 15 minutes, and a substantial improvement over the 2012 MacBook Air's 5.5 hours.

Since switching to solid state storage off the shelf with the late 2010 update, the MacBook Air has been known for its good battery life. But with the Haswell processors in place, it's absolutely stunning. At last, you can use your notebook all day long on a single charge.

But, Newer features such as touch screens and higher-resolution displays are still missing. The ultrabook competition is catching up, in terms of design.

The bottom line: Apple keeps the latest MacBook Air updates on the inside, but greatly improved battery life and a lower starting price make up for a lack of flashy design changes.                                                                                                                                                                  Specifications

Release date06/10/13

ProcessorIntelCore i5 1.3 GHz ( 2.6 GHz ) ( Dual-Core )

RAM installed size4 GB

Hard Drive128 GB

Operating SystemApple OS X 10.8 Mountain Lion

Display Type13.3 in

Max Resolution1440 x 900 ( WXGA+ )

Graphics ProcessorIntel HD Graphics 5000 Dynamic Video Memory Technology 5.0

Optical DriveNone                                                                                                                Price $1,099