Lenovo Yoga C640 review: The battery life blows us away

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Lenovo Yoga C640 review: The battery life blows us away

At first glance, it’s easy to dismiss this particular model of Lenovo’s Yoga C640, a Best Buy exclusive with a relatively anemic dual-core i3 Comet Lake CPU, a puny 128GB SSD, and a $600 price tag. That said, this sleek convertible (officially the Yoga C640-13IML) has an ace up its sleeve: a beefy battery that just goes, and goes, and goes.

While this made-for-Best Buy system isn’t a great pick for users looking to process 4K videos or crunch big numbers (there are other Yoga C640 configurations better suited for such CPU-intensive tasks), it could be a great fit for users looking for a versatile 2-in-1 that can go all day long without an AC cord.

Lenovo Yoga C640 Specs and Features

Lenovo offers three versions of the Yoga C640-13IML (we’ll just call it the Yoga C640 from here on out) on its website, including a $850 version (or $770 after discounts) with a 10th-gen Core i5-10210U processor, 8GB of DDR4 RAM, and a 256GB solid state drive, and a $1,000 model ($910 with rebates) with the same RAM and SSD but an upgraded i7-10510U CPU. There’s also a $1,050 configuration that ups the RAM on the Core i7 version to 16GB. All three models come with the same touch-enabled 13.3-inch Full-HD IPS display.

Our review version (81UE000WUS) of the Yoga C640-13IML isn’t listed on Lenovo’s website; instead, it’s a $600 Best Buy exclusive that’s considerably less expensive (and, consequently, less powerful) than the other three models.

Here are the details:

  • CPU: Dual-core Intel Core i3-10110U (Comet Lake)
  • Memory: 8GB DDR4
  • Graphics: Integrated Intel UHD Graphics
  • Storage: 128GB SSD
  • Display: 13.3-inch 1920×1080 IPS, touch-enabled
  • Webcam: 720p, dual-array microphone, physical camera shutter
  • Connectivity: One SuperSpeed USB 5Gbps (formerly known as USB 3.2 Gen 1) Type-C port, two SuperSpeed USB 5Gbps (formerly known as USB 3.2 Gen 1) Type-A ports, combo audio jack
  • Networking: Wi-Fi 5 (802.11ac)
  • Biometrics: Fingerprint reader
  • Battery capacity: 60 Watt-hour
  • Dimensions: 12 x 8.1 x 0.7 inches
  • Weight: 2.88 pounds (3.22 pounds with AC adapter)

Overall, this a typical configuration that we see in budget laptops. The dual-core 10th-gen Comet Lake Core i3 CPU is perfectly capable of everyday computing tasks such as web browsing, Office, and light photo editing, although it’ll start to chug when it comes to demanding multi-core operations like video processing or crunching databases. The 8GB of RAM offers a decent amount of headroom for multitasking or juggling multiple browser tabs.

The 128GB SSD will get cramped awfully fast. Once you take into account Windows 10 and other apps pre-loaded onto the C640, the drive only has about 77GB of free space left. If you store a lot locally, you might want to invest in an external hard drive or cloud storage.

Physically, the 0.7 inch-thick and 2.88-pound C640 is about the same size and weight as other 2-in-1 systems in its class. The fingerprint reader is always a nice bonus. WWhile Wi-Fi 5 networking is standard for laptops in this price range, just remember that you won’t be able to take advantage of the enhanced speed and efficiency features offered by cutting-edge Wi-Fi 6 routers.

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