Final Words

When looking at convertible laptops, Lenovo likely has the most prolific number of convertible devices and they fall under the Yoga line. When they came up with the Yoga hinge, it set the bar for convertible devices. It keeps the balance and usability of a traditional clamshell Ultrabook, but adds in the ability to use it in three additional touch modes. For the Yoga 3 Pro, Lenovo has refined this experience again, with a thinner, and lighter laptop. The watchband hinge is both stylish and functional. They have kept the high resolution display of the Yoga 2 Pro, but improved the overall efficiency of the device which allowed them to keep similar battery life with a smaller, and therefore lighter battery.

Moving to Core M may seem like a step backwards in performance. However when you compare most workloads to the outgoing Core i5 Yoga 2 Pro, the Yoga 3 Pro can hold its own against it, and even surpasses it in many benchmarks. Core M is more than just a lower power SoC. It is also about packaging. The size of Core M as compared to Broadwell-U is quite a bit smaller in all dimensions, including the Z axis, which allows for more space for other components around it, and a thinner overall device. When you look at the Yoga, and realise it is not just a notebook computer, the extra reduction in thickness is appreciated. It is still a bit big to use as a tablet, but it is better as a tablet than the outgoing model.

From left to right: Broadwell-Y (Core M), Broadwell ULT/ULX and Haswell ULT/ULX

The GPU side is certainly a regression though. Core M’s very restrictive TDP of just 4.5 watts means that the GPU is limited a lot quicker than Haswell-U or Broadwell-U GPUs are. It has the same basic architecture as the Broadwell-U GPU, and therefore it should have similar performance if given the headroom for this. Intel still has some work to do on the GPU side to make it more efficient, and they lag some of their competitors there, although less so with HD 5300 than the woeful Atom N2840’s Intel HD Graphics. They have made some headway here, but still have some more room to improve.

As a tablet, the Core M powered Yoga 3 Pro will run circles around other tablets when performing CPU tasks. The GPU is a bit behind, but it is ahead of the iPad Air already, so it is not a slouch. The CPU is miles ahead though, even when compared to the Apple A8X which is consistently the best ARM based tablet CPU.

The display, which was a defining feature of the Yoga 2 Pro, is a slightly different model of the Samsung RGBW IPS LCD. It offers the same great viewing angles and crisp text as before, but it also suffers from being uncalibrated. It would be nice to see Lenovo include an ICC profile, or better yet to switch to the Sharp IGZO display which has proven to be the current LCD to beat right now. The one real drawback of the Samsung display is the terrible black levels, which give a mediocre contrast ratio and is very noticeable when watching movies on the Yoga 3 Pro. A switch to a true RGB model like the Sharp would fix that glaring issue. The steady march of progress means that Lenovo sitting still on their display means that they have been passed by their competitors.

Lenovo has fixed their biggest issue with the Yoga 2 Pro though, and that was the wireless performance. The move to a Broadcom 802.11ac solution has moved them from the bottom to the top of our test, and it was sorely needed. My wife still owns and uses the Yoga 2 Pro every day, and her one major complaint is the wireless performance. The new model solves that and then some.

For 2015 though, Lenovo has some serious competition. If you are after a pure Ultrabook, the Yoga 3 Pro is likely not the frontrunner right now. Lenovo does have other offerings, such as the non Pro version of the Yoga, and the ThinkPad Yoga, which do come with Broadwell-U and would have better performance for heavier workloads. However I have yet to see a better convertible laptop yet. Other OEMs have taken the Yoga style hinge and incorporated it into their designs, and we will see more of these as time goes on.

The Yoga 3 Pro is at least as good as the Yoga 2 Pro, which is a compliment. After owning the Yoga 2 Pro for over a year, it is still incredibly handy to be able to flip the display around and use it as a touch device. The new Yoga 3 Pro improves the overall design, and makes it even thinner and lighter than the outgoing model. The Yoga 3 Pro is even thinner than the just announced MacBook, and although it is also a bit heavier, it does include a touch digitizer and Gorilla Glass over the display, all the while coming in at $1150, around $150 cheaper than the MacBook.. Apple has also seen that Core M, especially the just released 5Y71 model, is enough performance to not have any regression over Haswell-U which powered all of the Ultrabooks last year. If battery life is not your biggest concern, then the Yoga 3 Pro is certainly worth checking out. It offers incredible versatility due to the design, and it has made some nice improvements for the new model.

Battery Life, Wi-Fi, Speakers, Noise, and Software
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  • Zizy - Friday, March 13, 2015 - link

    Core M seems to be a mixed bag. Great if you want short bursts of activity but fails when you demand any longer activity, especially a GPU one. Fine for netbooks, but spending 1k+ to get a tablet class of performance seems pointless to me.
    XPS 13 has better performance and normalized battery life. What is wrong with Yoga?

    Will you also make an in-depth CPU test?
  • Drumsticks - Friday, March 13, 2015 - link

    The performance of the core M 5Y71 parts is leavig me feeling a little bit better for a potential core m SP4. Still, this was with a fan - fanless performance is sure to be worse, and if you have a fan you might as well use the full voltage part!

    But in any case, I really hope that Windows 10 and Core M skylake can coincide. A skylake Surface Pro 4 in a fanless design could seriously be amazing without sacrificing performance compared to Haswell-U.
  • mkozakewich - Saturday, March 14, 2015 - link

    The funny thing is that it's pretty much always about the cooling. A 5W TDP part works in a 5W TDP case, but it would be helpful to know what the maximum TDP is for turbo workloads. If the SP4 still has a fan and it could push 15 W out, you'd probably get the full performance without throttling.
  • lilmoe - Friday, March 13, 2015 - link

    I've never really understood Core M and its value proposition. Maybe current applications aren't optimal. Since ^this ultrabook has a fan, I just can't seem to understand why they didn't wait it out a bit and went with a cheaper Broadwell U that races to sleep much faster. In that aspect, Dell got it right with their XPS 13. No one talks about how thin this device is, especially that it's thinner than Apple's new MacBook. I can't even justify the price to performance ratio even for a fanless Windows x86 tablet. Microsoft should stick with Broadwell U for the SP4 to maintain a performance upgrade at the least.

    I don't know, Core M probably only has value for those who want an expensive, fanless machine, and this only works for Apple most of the time.
  • name99 - Friday, March 13, 2015 - link

    How do you get that it's thinner than new Macbook?
    MacBook tapers from 13.2mm to 3.6mm. This is a flat 1.28mm. On "average" MacBook is thinner, and visually it looks far thinner.
  • lilmoe - Friday, March 13, 2015 - link

    Since that seems the only thing you got out of my post, I'm sorry to have offended you...
  • N000RM - Friday, March 13, 2015 - link

    Would you say a two penny nail is thin because it tapers to a point? The Yoga is thinner and lighter, fanboi.
  • michael2k - Friday, March 13, 2015 - link

    The Yoga is over half a pound heavier. You also fail to understand how triangles work. The Yoga is 1.28cm more or less across the whole laptop. The MacBook is 0.35 to 1.31cm. If we assume the delta is defined by a triangle then it will be 0.48 in average height if they could flatten it's volume, or a total height of 0.83cm, again, if they could squeeze the whole design into a rectangle. And if Apple updates the MacBook Pro, next year, with similar technology it will likely be a straight 1.31cm across.
  • wolfemane - Monday, March 16, 2015 - link

    There is a sign on the door that says to leave all Jr. Math Awards with the attendant before entering Anandtech. Obviously you didn't see that... hmmmm... what to do, what to do.
  • heron_kusanagi - Monday, March 16, 2015 - link

    I don't know, performance is one thing, but if all you are doing is Office work, maybe some web surfing and casual games, Core M's proposition is ideal.

    The Asus UX305 (which I hope Anandtech reviews next) is using the Core M, and for the most part, it works as a ultrabook with no added sound profile to it. And its pretty cheap too.

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