Lenovo Yoga C640 review: Does a move away from ARM work for this convertible?
Source: Windows Central
Lenovo's Yoga C630, which nosotros reviewed late 2022, got high marks for its convertible design, first-class battery life, and LTE connectivity. Information technology was an ARM-based device running on a Snapdragon 850 processor (CPU) and 8GB of RAM, which, at the fourth dimension, fabricated information technology rather powerful in this category of devices. It was compared every bit a cheaper alternative to the Samsung Milky way Book2, another hot ARM-based device at the time.
Lenovo has refreshed the C630 with the C640 I've been using for the last week. Instead of running on ARM, it has moved to 10th Gen Intel Core "Comet Lake" CPUs. Also gone, unfortunately, is LTE connectivity for staying in touch with cellular information instead of Wi-Fi. A lot has otherwise remained the same with a few tweaks here and there. Is it still worth the bargain price?
If y'all're interested in buying this laptop, be aware that Black Friday is fast approaching. This sale generally sees laptop prices cut down, and the Yoga C640 might be included. Just be aware that Lenovo often offers deep discounts at its ain site; a model with 10th Gen Core i7-10510U CPU, 8GB of RAM, and 512GB SSD is currently about $860. If you're browsing Black Fri sales, be certain you lot get similar or more hardware at a amend toll before making a last conclusion.
Cracking Value Convertible
Lenovo Yoga C640
Bottom line: The Yoga C640 is still a well-built, well-performing convertible laptop that's available at a very tempting price. Information technology doesn't offering all the same features equally its C630 predecessor (similar LTE connectivity and dual USB-C), but it's still a great alternative to more expensive xiii-inch convertibles on the market.
Pros
- Great typing and pointing experience
- Feels and looks like a premium build
- Size and weight suitable for a tablet
- Stellar battery life
- Stiff performance from 10th Gen Intel CPUs
Cons
- LTE is no longer an choice
- USB-C charging would be preferable
- Audio could be better despite superlative-firing speakers
- Some odd fan behavior
Lenovo Yoga C640 at a glance
Lenovo supplied Windows Central with a review unit of the Yoga C640, with 10th Gen Intel "Comet Lake" Core i3-10110U CPU with two cores and a turbo frequency up to 4.1GHz. Backing up the CPU is 8GB of DDR4-2400MHz RAM that is soldered to the board (no option for upgrades) and a 128GB M.two PCIe solid-state bulldoze (SSD). Information technology uses a small 2242 M.2 format that can be upgraded, just not to something larger similar the 2280 size.
This is the baseline model that Lenovo has to offer, starting at nearly $630. That'due south a stellar cost even for the relatively low-stop hardware inside, as we will see when it comes to features and build quality.
Lenovo allows you to customize the Yoga C640 to your liking at checkout, currently offering up to a 512GB SSD and 10th Gen Intel Core i7-10510U CPU. This high-end model tops out at well-nigh $910 before any of the frequent Lenovo coupons and sales.
Here'due south a detailed breakdown of the exact specs found in the Yoga C640 I tested for review.
| Category | Spec |
|---|---|
| OS | Windows 10 Abode |
| Processor | 10th Gen Intel Intel Core i3-10110U Dual-cadre Upwards to four.1GHz |
| RAM | 8GB DDR4-2666MHz Soldered |
| Graphics | Integrated Intel UHD Graphics |
| Storage | 128GB Thou.2 2242 PCIe (x2) SSD |
| Display | xiii.3 inches 1920x1080 (FHD) IPS, touch 300 nits |
| Active pen | Optional |
| Ports | USB-C 3.i Two USB-A 3.1 three.5mm audio |
| Audio | Dual 2W superlative-firing speakers Dolby Atmos |
| Wireless | Intel Wireless 9560 802.11ac (2x2) Bluetooth 5.0 |
| Camera | Forepart-facing 720p |
| Security | Fingerprint reader Webcam TrueBlock shutter |
| Battery | 60Wh 45W AC adapter |
| Dimensions | 12.05 10 8.05 x 0.67 inches (306mm ten 204.48mm 10 16.95mm) |
| Weight | From 2.98 pounds (i.35kg) |
| Color | Iron Gray |
What I dearest about Lenovo's Yoga C640
Source: Windows Central
Compared to the Yoga C630, the C640 is a bit thicker at 0.67 inches (16.95mm) compared to 0.49 inches (12.5mm). Information technology's also heavier at 2.98 pounds (i.35kg) compared to 2.65 pounds (1.2kg). However, thank you to the chin bezel being shrunk downwardly to better fit the xvi:ix display, the laptop isn't quite as deep. That ways the palm rests are about a one-half-inch less spacious, just I didn't find information technology to be an issue when typing.
Whereas the Yoga C630's lid was aluminum and base was magnesium blend, the C640 employs an aluminum lid and PC plastic with a glass fiber blend for the base. It'south plenty sturdy, and it's finished with an iron-grayness "sandblasted" blanket that feels a lot like the soft-touch on blazon Lenovo uses on the ThinkPad lineup. It'south smooth to the touch and overall merely a lot more than comfortable to hold compared to something similar the all-aluminum Yoga C740.
The backlit keyboard stretches from edge to edge, leaving just plenty space on either side for dual top-firing 2W speakers. Like the C630, audio is notwithstanding a bit flimsy despite Dolby Atmos. Sound is clear and unmuffled (especially when in notebook mode), just information technology'due south not as deep or full as larger Ultrabooks. Typing is stellar with full-size Shift, Ctrl, Tab, and Backspace keys. There's plenty of key travel despite the sparse chassis, and keys are spaced appropriately. The just thing to notation is that the up and down arrow keys are compressed into the size of a single regular key.
But below the keyboard is a fingerprint reader embedded into the palm remainder. It works with Windows How-do-you-do for extra security. Lenovo's trend of putting an unobtrusive webcam shutter into its laptops continues here. The 720p camera is nothing miraculous but gets the chore done for video conferencing, something specially important while many people are working from home. The Precision drinking glass touchpad is sized appropriately for the device and tracks perfectly.
Source: Windows Primal
The C640 is perfectly sized to be a convertible that can convert into tent, stand, and tablet modes. Information technology's not too heavy or thick to be held every bit a tablet, and the narrow bezel that remains prevents accidental touches. The power button has been repositioned and fix into the chassis edge to prevent unwanted presses when the tablet is held in two hands. You can add Lenovo'southward Active Pen 2 for virtually $70; the review unit of measurement didn't include one so I tin't comment on how well it inks. However, the pen offers iv,096 levels of pressure sensitivity and 2 customizable buttons.
The bear on brandish is rather basic with just an FHD choice, but that's sort of expected at this price. It is considered "anti-glare" to help with the sleeky finish, but at a maximum 305-nits brightness, at that place are still some issues with working in a sunlit room. I had effulgence cranked up in a higher place 85% when working during the 24-hour interval. It does lower down to merely 2.ix nits brightness, though, making it ideal for late-dark viewing even without Windows 10'southward night light characteristic.
Source: Windows Central
I tested brightness and color with Datacolor's SpyderX Pro and came abroad with 100% sRGB, 80% AdobeRGB, and 81% DCI-P3 coverage. It's a groovy looking console despite the average brightness, and it will exercise the trick for piece of work or media.
Lenovo's Yoga C640 offers about xiv hours of battery life, ideal for those on the move.
I used the Yoga C640 for everyday productivity work for a few days, including word processing, heavy web browsing, video streaming, and email. Fifty-fifty with the low-end Cadre i3-10110U CPU, it handled everything efficiently. I didn't get into photograph editing or gaming — if those are on your listing and you're business firm on this laptop, you'll want to consider upgrading to a Core i5 or Core i7 version. Fifty-fifty then, something with Intel'south Ice Lake integrated Iris Plus graphics or a dedicated GPU volition brand a lot more sense. Have a look at our roundup of the best Windows laptop options for more buying advice.
One of the shining features that have carried over from the Yoga C630 is bombardment life. The 60Wh battery is rather large for a laptop this size with this level of hardware, and I clocked just less than 14 hours from PCMark10's Modern Office battery test. That'south slightly less than the 15 hours seen in the C630, but 14 hours is yet above average and figures out to about 11 or 12 hours of regular usage. If you'd like to head out in the morning to the office or elsewhere, you won't have to worry nigh hauling the (albeit small) Air-conditioning adapter with you.
I ran some constructed benchmarks to see exactly how the Yoga C640 measures up against other laptops we've recently reviewed.
CPU
Geekbench 5.0 Benchmarks (Higher is better)
| Device | CPU | Single core | Multi cadre |
|---|---|---|---|
| Lenovo Yoga C640 | i3-10110U | 1,015 | ii,111 |
| Lenovo Yoga C740 fifteen | i7-10510U | 1,229 | 3,531 |
| Lenovo Yoga C740 14 | i5-10210U | i,094 | 3,767 |
| Dell XPS 13 (9300) | i7-1065G7 | 1,284 | 4,848 |
| LG gram 17 (2020) | i7-1065G7 | one,208 | 3,349 |
| Acer Swift 5 (SF514-54T) | i7-1065G7 | 1,202 | 3,600 |
| Surface Pro 7 | i7-1065G7 | 1,205 | 4,852 |
| Surface Laptop 3 13.v | i5-1035G7 | 1,177 | 4,413 |
| Dell XPS 13 2-in-1 7390 | i7-1065G7 | 1,209 | 3,571 |
| Dell XPS 15 7590 | i9-9980HK | 1,176 | 7,624 |
Single-core score here is where it should be, and due to but two cores (compared to four or six from most other CPUs in the list), the multi-cadre score is lower. Still, the C640 held upwardly under rather vigorous productivity work. Comparing Geekbench iv scores, the C630'south Snapdragon 850 scored 2,287 and seven,215, while the C640'south Cadre i3 scored four,444 and 8,376. When emulating the x86 app, the Snapdragon 850 managed simply 1,345 and three,560.
PCMark
PCMark 10 Express
| Device | Score |
|---|---|
| Lenovo Yoga C640 | 4,008 |
| Lenovo Yoga C740 15 | 5,302 |
| Lenovo Yoga C740 14 | 4,941 |
| Dell XPS xiii (9300) | 4,524 |
| LG gram 17 | 4,157 |
| Acer Swift 5 (SF514-54T) | 4,415 |
| Surface Pro 7 (i5) | three,992 |
| Surface Laptop 3 fifteen (AMD) | 4,006 |
| Dell XPS 13 2-in-1 (7390) | 4,427 |
| Dell Inspiron 13 7390 2-in-1 | 3,764 |
| Dell XPS xv 7590 | 5,521 |
| Dell Precision 3541 | 3,906 |
A respectable score here from a test that measures how well a PC's hardware works together to accomplish regular work. Despite just a Core i3 CPU, the C640 scored improve than other laptops with better hardware.
Cinebench
Cinebench (R20) (College is better)
| Device | CPU | Range |
|---|---|---|
| Lenovo Yoga C640 | Cadre i3-10110U | 924 to 929 |
| Lenovo Yoga C740 15 | Cadre i7-10510U | 1,415 to 1,613 |
| Lenovo Yoga C740 fourteen | Core i5-10210U | 1,450 to one,535 |
| LG gram 17 | i7-1065G7 | one,079 to i,199 |
| Acer Swift 5 (SF514-54T) | Core i7-1065G7 | i,361 to 1,400 |
| Lenovo ThinkPad P53 | Xeon E-2276M | 2,686 to two,701 |
| Surface Laptop 3 13.5 | Core i5-1035G4 | ane,584 to 1,606 |
| Surface Laptop 3 xv | Core i7-1065G7 | ane,703 to 1,745 |
Running the Cinebench R20 render test multiple times in a row tin show how well a laptop deals with heat and thermal throttling. No issues here from the dual-core CPU, though the quad-core CPU might run into different results due to such a small fan inside.
SSD
CrystalDiskMark (College is improve)
| Device | Read | Write |
|---|---|---|
| Lenovo Yoga C640 | 1,906.78 MB/due south | 970.69 MB/southward |
| Lenovo Yoga C740 xv | one,442.30 MB/s | 357.40 MB/s |
| Lenovo Yoga C740 14 | three,408 MB/south | ii,982 MB/s |
| LG gram 17 (2020) | 3,477 MB/southward | ii,900 MB/s |
| Surface Laptop three 15 | 2,028 MB/due south | 806 MB/s |
| Surface Laptop iii 13.5 | 2,338 MB/s | 1,583 MB/s |
| Acer Swift 5 (SF514-54T) | 1,641 MB/s | ane,025 MB/s |
| Lenovo ThinkPad X1 Extreme (Gen 2) | 3,416 MB/south | 3,016 MB/s |
| Lenovo ThinkPad P53 | 3,567.23 MB/south | ii,813.25 MB/south |
| Lenovo ThinkPad P52 | 3,120 MB/s | i,551.v MB/south |
| Dell XPS 15 7590 | three,000 MB/s | 2,796 MB/s |
| MSI PS63 Mod | 3,300 MB/s | i,875 MB/south |
Inside is a Samsung SSD fashion faster than what was in the C630 (which scored around 791 MB/s read and 220 MB/s write). I also ran PCMark x's SSD test and came back with a score of 1,224.
What I dislike almost Lenovo's Yoga C640
Source: Windows Central
Other than the middling audio and and then-and so webcam I already mentioned — both things I can live with — I must talk about port selection. The Yoga C630 featured dual USB-C ports (one reserved for charging) alongside dual USB-A, a three.5mm audio jack, and a SIM slot. The Yoga C640 has been pared down to just one USB-C, with charging instead of going through a barrel slot. No, y'all cannot use the USB-C port on the right side for charging. It would have been nice to meet the dual USB-C ports make a return here, especially because how long the bombardment lasts and the options for alternate connectivity without a charger fastened.
Finally, the fan beliefs is notable. Even with Lenovo's Intelligent Cooling feature disabled in the Vantage app, it seemed to kicking on and off mode too frequently, sometimes spinning up and downwards 40 times in a minute under low load. With the PC being pressed, it turns on and stays on as it should, which is far less noticeable. At least it'south quiet, so if you're not in an otherwise silent room, y'all likely won't hear information technology. Still, it's an effect that should be fixed.
Should y'all purchase Lenovo's Yoga C640?
Source: Windows Central
The Yoga C640 sits amongst some tough 13-inch convertible competition, including premium options like the HP Spectre x360 13 and Dell XPS xiii 2-in-1. That'southward where nearly people begin their search, and both devices toe the line of being perfect PCs. Despite competitive pricing, however, they're out of budget range for a lot of people. That'southward where a truly budget option like the C640 excels.
It doesn't quite take all the same magic equally the C630 predecessor, only information technology withal nails the basics. Typing and pointing are comfortable, the display is colorful and is inking-compatible, and information technology's built to a high standard that'due south not always axiomatic with a device at this toll. Lack of LTE is a shame considering information technology helped make the C630 something special for those e'er on the move. LTE was included in the features when the C640 was first revealed, just it has since gone by the wayside in Northward America. Lenovo does say it expects LTE is some other regions at some point.
The performance is stellar. Fifty-fifty with the depression-end Core i3 model, I was able to handle rather heavy productivity and multitasking. It easily beats out the Snapdragon 850 that was in the Y630, and you lot won't have to worry nearly emulating x86 apps at reduced performance. Just don't look to upgrade RAM or an SSD with anything larger than the Yard.2 2242 format.
Birthday the Yoga C640 isn't a perfect 13-inch convertible, and there were some cutting corners to keep the cost down, but information technology's all the same a solid pick bachelor at a great price that the premium options only tin't touch. If you need a productivity car with inking, it should undoubtedly be considered.
Swell Value Convertible
Lenovo Yoga C640
Awesome for productivity
No LTE is a shame, just the C640'southward 10th Gen Intel hardware ups functioning, and you still get all-twenty-four hour period bombardment life.
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Updated February 2022
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Source: https://www.windowscentral.com/lenovo-yoga-c640-review
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