Here short my experience with the version with Core i3 4020Y and 8GB memory, which it unfortunately did not exist on Amazon. By contrast, the fear that the screen resolution of 1366x768 could be too low, I must say that it is even very pleasing to the 11 inches to work with it because the font does not need to be scaled up and therefore the representation remains sharp in all applications! In addition, one has when using the SONY Pictures Software PlayMemories in the 100% view of the photos of a good size representation of pictures with correspondingly good image control. What motivated me was above all that you can to (fitted as standard with my model Samsung 128GB) or RAM and Replacing the battery components such as the mSATA drive to purchase this equipment. For this purpose a little technical knowledge is already necessary but at least these components are not soldered on the board! About Lenovo support site you even a hardware Manual receives (though in English) after you can perform Step by step replacement of the components. Note: when replacing the hard drive, the warranty is lost because a screw is secured with a sticker. I've yet made and installed 256GB (X110 Sandisk). The runtime of about 7.5 hours in the mixed office - Internet browsing operation is completely sufficient for me. The screen is bright enough to even outdoors - not in direct sunlight - to work. Then I also have emphasis because I like to work in the summer on the terrace. Very pleasant is the noise level, which can be classified as practically inaudible. If the fan really needs time to dissipate more heat (but at a TDP of 11.5 watts very rarely) it is a very pleasant subtle Geräuach without high frequencies. Finally, a few tips regarding the pre-installed software: Since I'm a fan of freshly installed Windows with subsequent configuration for my needs, I allowed myself WIN8.1 on DVD and reinstalled. This I have already plan not the senseless at WIN8.1 McAfee and the other programs such as OneKey Recovery, etc. With the WIN8.1 board means you can create a boot drive and save on the system backup the "fresh" system on an external hard drive or a second partition on the disk. So I have a possible "slim" WIN8.1 with minimal power requirements. About the tool "BatteryBar" I measure at about 4Watt in Idlebetrieb with WLAN. In my view, for a full-fledged computer very well. Even the Kindle app, I use without problems with the signature - of course, the writing is not as sharp as on a Kindle in the resolution but much better than expected. The only complaint for me: To enter the BIOS you have to press the small recessed button next to the Start button with a ballpoint pen or similar thin sticks. That could have to go through a F-key. All in all for me the perfect hybrid of laptop and tablet, I would buy again at any time. I hope to have helped in deciding for or against.