Lenovo IdeaPad Yoga 11S Ultrabook Convertible Review

Posted on 30 July 2013, Last updated on 08 March 2020 by

Convertible Functionality


For the most part it’s very easy to convert from laptop to tablet, less awkward than the swiveling form-factor of the Gigabyte U2142 that we recently reviewed. I say “for the most part” because converting from an open laptop to tablet is simple and so is converting back, however, picking up the Yoga 11S as a closed laptop and trying to flip it open to tablet mode is a bit awkward. The issue stems from the rounded edges of the 11S (or perhaps partial lack there of).

lenovo yoga s11 edge diagram

When it’s closed, the edges are like two flush quarter-circles completing a semi-circle — there’s little room to get your fingers in there to get it open, making it difficult to flip from closed in laptop mode while you’ve got it in your hands. When the unit is sitting on a desk it isn’t a problem because you can lift the lid part way, with the aid of gravity, then use your other hand to hold the base while you open the rest of the unit. At which point you can lift the whole thing off the table to flip the screen back and facilitate the convertible action. Closing the unit from the tablet mode is made easy for the opposite reason — when the screen is flipped back on itself, the edges curve away from each other, making it easy to pry open (as shown above).

This isn’t really a huge deal, but I wanted to mention it because I’ve often had the desire to ‘grab-and-go’ — pick up the 11S and head somewhere while converting it for handheld use — but found this issue to make it more difficult to open from a holding position and making it more likely to be dropped.

When using the unit in tablet mode, the back of the computer is covered by the keyboard. It feels pretty strange and sometimes when you’re gripping the unit like you would a tablet, it doesn’t feel like pressing on the keys or the trackpad is such a good idea.


lenovo yoga 11s windows 8 apps

There’s not much to be said about Windows 8 that hasn’t already… it lends itself to a jarring experience. The touchscreen portion works fairly well in terms of swiping around, but there’s an unfortunate dearth of key apps — no Facebook, no YouTube, no Spotify, no Google+, etc, not to mention lots of confusing inconsistencies and hidden controls. They’ve got Netflix though… so there’s that.

If you’re a first time user, get ready for a steep and frustrating learning curve, just know that the same will be true on any Windows 8 computer, not just the Yoga 11S.

Lenovo included a small set of bloatware apps, some useful: a (clunky) PDF reader; some annoying: McAfee antivirus which immediately started bothering me about a subscription (leading to its untimely uninstillation). There’s also a support app which didn’t seem too bad, but it was a bit shallow — frequently kicking me out to webpages or to desktop applications.

There’s not much more bothersome in Windows 8 than being in a touchscreen app in tablet mode and suddenly being kicked back to the desktop to do something. I found it especially odd that when the Support app asked to be updated, it kicked me over to touchscreen IE to download a package, then when I launched that package, it kicked me out to the desktop to run an installer… this is all as opposed to simply updating like other touchscreen apps through the store.

In the end, you probably won’t end up using these apps much, so their quality isn’t terrible important. However, it would be nice to have an all-encompassing and easy to use support app.



As a computer equipped with one of the latest Ivy Bridge processors, and the fastest Y-series variant at that, I was expecting the Lenovo Yoga 11S to be snappy. While it performs fairly well, I found occasional stutters and hiccups that I wasn’t quite expecting. The unit occasionally slowed down on some 1080p web videos, but it wasn’t clear if CPU speeds were to blame.

With a 13W TDP, Intel had to make some concessions on the Core i7-3689Y processor found in the Lenovo Yoga 11S, namely, they had to bring the clock speed down. This applies to both the CPU and the graphics core. The i7-3689Y processor has a top normal speed of 1.5GHz and can Tubro Boost up to 2.6GHz. Compare that to the latest U-series processor which runs at 2.1GHz normal speed and can Turbo Boost up to 3.3GHz. Additionally, while the graphics core base frequency is 350MHz for both, the i7-3689Y tops out at 850MHz, while U-series graphics cores generally run up to 1.15GHz or 1.2GHz.

And that’s where I felt it the most — in the graphics. In my experience, HD 4000 (the graphics core in all Ivy Bridge processors) handles Minecraft well (30+ FPS) with top settings. With the Lenovo Yoga 11S, I had to turn down draw distance and switch from Fancy to Fast graphics in order to achieve 30+ FPS. It would seem that not all HD 4000s are made the same — you can tell this easily from the Lenovo Yoga 11S’s Cinebench OpenGL performance in the chart below.


PC Mark 7

lenovo yoga 11s pc mark 7


3D Mark 06

lenovo yoga 11s 3dmark 06


Cinebench CPU

lenovo yoga 11s cinebnech cpu benchmark


Cinebench OpenGL

lenovo yoga 11s cinebnech opengl benchmark


Crystal Disk Mark

lenovo yoga 11s crystalmark

Battery Life and Boot Times

Running the Battery Eater test in classic mode (which taxes the CPU at 100% until the battery dies), the Lenovo Yoga 11S managed 2 hours and 11 minutes. This translates to around 4 hours and 22 minutes of real productivity and probably closer to 5+ hours if you’re doing light web browsing/computing. We also saw a very consistent discharge graph which let’s us know that the battery is healthy and won’t give you any surprises when you think you’ve got more time left than you have.

lenovo yoga 11s battery benchmark

As for boot times, the Lenovo Yoga 11S is not as fast as we’ve seen from other Ultrabooks. It lacked that instant-on feeling that other units are capable of (which is usually achieved with sleep/wake < 2.0 seconds). Still, at just over 2 seconds resume from sleep, it’s miles ahead of many other non-Ultrabook:

  • Sleep: 2.2s
  • Wake: 2.3s
  • Shut Down: 4.8s
  • Boot: 8.8s
  • Restart:¬†19.9s¬†

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