Lenovo Yoga C640 Review: A Good Budget 2 in 1


The Lenovo Yoga C640 is the updated model of, you guessed it, the Lenovo C630. The Lenovo C630 was a Windows 2 in 1 that ran a Qualcomm 850 processor. While I did not review the laptop the ones I watched said battery life was alright but the Qualcomm 850 could not keep up unfortunately. The C640 scrapped Qualcomm for Intel and kept the sleek 2 in 1 design. We are here to see if Intel can keep some great battery life with better performance for a reasonable price.


In case you missed the specifications of the model I reviewed they will be listed below. We reviewed the lowest end configuration which, in my opinion, is the best value and the one you should be looking at.

  • Core i3 10110u CPU
    • Base speed 2.6GHZ
    • 2 cores 4 threads
    • 4mb L3 Cache
  • 8gb DDR4 Ram (Dual Channel 2667Mhz)
  • 128gb PCIe SSD
  • 13.3 inch 16:9 1080p display (rated at approximately 300nits)
  • 360-degree hinge
  • Fingerprint Scanner
  • Dual Speakers (Dolby Atmos Certified)
  • 1mp Front Camera with Privacy Filter slide
  • 2 USB A 3.0
  • 1 USB C 3.1 Gen 1
  • 3.5mm Headphone/Microphone Jack
  • Backlit 10 keyless keyboard
  • Windows 10 Home
  • MSRP: $599 


Many of you are probably wondering how a Core i3 and 8gb ram holds up to the everyday computing tasks this device was meant for. If you’re the type of person who needs you laptop to do web browsing, email responses, and document typing then this device will be right up your alley. It also plays up to 1080p videos without a hitch. I will note I used Microsoft’s Edge web browser while using this device. I truly find it just as good if not better than Chrome since it started using Chromium.

Where I did have a problem was when I would do group calls on Google Meet. If you have 2-4 people in a video chat you will be fine. However, if your job is anything like mine you can have upwards of 20 people in a video call. This is very taxing of the CPU. If I left the tab or window, whether I had 3 or 20 tabs open the computer slowed to a halt. It was not a pleasant experience. It was the only time I felt a dual core processor was not enough. While it is an extreme situation I wanted to mention it. These are weird and crazy times and I feel video chats will become a mainstay in how we participate in school and work.

I did not test gaming because with the lack of a quad core processor and dedicated graphics card that is not what this device is meant for. This device is meant for a student or working professional who is doing casual work. If you are really curious about how the CPU performs I will link screenshots to some Geekbench tests I did. I did the test with the performance slider to maximum performance. This is on the power slider you can find by clicking on the battery icon in Windows 10. The device was also plugged in and at 100% battery. This was to ensure the most performance possible.

The “2 in 1” Factor:

Some devices do 2 in 1 well, others, not so much. What I am taking out of the equation is my feeling on Windows as a tablet based operating system.

I liked the form factor of this device. A 13.3 inch screen with minimal bezels is the largest I would go for handling the device. It did not feel unwieldy, however, I also would not want to hold it for long periods of times. Given the 2 in 1 form factor and the ability to prop it up. The device gets a pass from me.

Where it does not, is in the form of button placement and speaker placement. In laptop mode the speakers are facing right at you, which is excellent. However, in all other modes they are facing away from you, most times directly on the floor. I would put them on the side. That way no matter what form factor you are in the speakers are not muffled. I will say, the speakers are loud and clear though, so not a major knock.

What was a major pet peeve for me was the placement of the media controls. You have no idea how many times I was watching a video in tablet mode, in full screen and needed to change the volume. Only to find I could not unless I either untoggled the full screen or flipped the screen back to laptop mode. This device would have been far better served with the media controls on the side near the power button.

What is awesome about this device is having a gorgeous 13.3 inch screen in such an accessible form factor. You can get work done when you need to and enjoy your media when you’re done. Having all of that in one device is awesome. Although you make some sacrifices you don’t lose any of the laptop conveniences to get that.

Battery Life:

While I do not have any concrete numbers, the battery life was great. If I was browsing the web and typing documents I could expect at least 8 hours of battery life (this is an approximate number). I never felt myself reaching for a charger during the work day. If I forgot to charge the laptop then maybe after 4 hours I would reach for a charger.

The times I did reach for a charger was during those large video calls. When the processor really ramps up, that’s when the battery life suffers. I would get around 2-3 hours when I was on those really intensive calls. While you can get through it, I don’t recommend it. Then again, most computers when you tax the CPU you drain the battery. 

Fortunately though the laptop never got uncomfortably hot during these times. The fan was audible to me though, but not ridiculously loud.


I really enjoy this display. The minimal bezels and bright colors make it pleasant to view for long periods of time. I have nothing to complain about this device. While I wouldn’t recommend doing video or photo editing on it (mostly because the colors don’t look accurate and I cannot test the accuracy of them), I can say for the target audience the screen is beautiful. My only gripe would be to make it a 16:10 or 3:2 aspect ratio. It is nice to have more vertical viewing, especially when typing documents and viewing web pages. Other than that it is gorgeous.


This keyboard is a joy to type on. I rarely had mis-clicks and the keys have nice travel. It is nicely sized too. This section is so short because I really don’t have any complaints. It’s a nice keyboard that I really enjoy typing on. It also has 2 levels of backlighting (not including off). Given the price, it’s a highlight.

Camera and Microphone:

The webcam up front is a fine 720p sensor. I would use it in nice lighting, but it’s certainly there for basic video chats. If you’re a privacy freak then it’s the next best thing is not having one at all.

I included the microphone in this section because it is too sensitive. When I am on video chats there were times where people could hear themselves or me typing. Even when the volume was at around 25%.

Fingerprint Sensor:

The fingerprint sensor was fast and accurate in my experience. I also really liked that it was not embedded into the trackpad. I am honestly surprised at how many laptops at different price points are including fingerprint sensors.


The device has one USB-C 3.1 Gen 1 port. While the port is fast enough, and nice to have, it does not charge the device. Having an option for even 15 watt charging through the port would have made this device far easier to recommend. If you lose your charger or need a spare finding a USB – C charger is far more accessible, especially if you’re in a pinch. Most phones (minus iPhones) coming with a USB C charger these days also means if you travel you’d only need one charger for all your devices.


With a starting price of around $629 on Lenovo’s website I feel the device is a little bit too expensive for what it is. When you creep up into the $650 range you’re getting to Core i5 range. When you move up to the Core i5 model the price skyrockets as well. My other small gripe is the 12gb ssd. While you may not be storing games or a bunch of programs 12gb is still small. If Lenovo is putting in an i3 then they should at least outfit the device with at least 256gb storage for this price. 

Other than that, everything is priced fairly. The display is beautiful, you have ample ram and a great 2 in 1 design. The design is sleek and light without feeling cheap, the trackpad is nicely sized and accurate, you even get a fingerprint sensor! If you can handle having a slightly slower CPU and a smaller SSD then I say to go for the device. My only pressing point is to get it when it goes on sale. If you can snag it for $550 then it’s a great deal. Like I said, the price isn’t outrageous, but if you can get a slight discount it makes the deal a little sweeter.

Overall, it’s a well built device for a working professional or student. If you’re looking for a laptop in general, the Lenovo Yoga C640 is a great option.  There were a few parts of the device I had issues with. Once you settle in with the device you start to forget about the few small issues it has and enjoy it for what it is.


If you are interested in the Lenovo Yoga C640 you can find it at Lenovo’s website here: https://www.lenovo.com/us/en/laptops/yoga/yoga-c-series/Yoga-C640/p/88YGC601300


This device is provided on a loan from Lenovo. The device was sent for review purposes and will be sent back to Lenovo once the review period is over. The device will be reviewed honestly with no information being sent to Lenovo before publishing. All thoughts and opinions are those of the author. Onetechstop nor its authors make no profit from sales of the Yoga C640 or any Lenovo products.


Lenny Bonsignore
Lenny Bonsignorehttp://www.OneTechStop.net
Lenny Bonsignore @LennyBons34 is Owner/Editor- in -Chief of OneTechStop, Sports fan, Tech guy, & Mailman by Day [email protected]

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