Test Lenovo Yoga Slim 7i Carbon : l’ultrabook tactile poids plume

Test Lenovo Yoga Slim 7i Carbon : l'ultrabook tactile poids plume

Building

Austere looking, the Lenovo Yoga 7i Carbon stands out right from the start with its featherweight (870g). A weight allowed by the use of magnesium and carbon fiber; don’t expect to see carbon fiber, it’s just used to reinforce the chassis.
Another surprise in the grip, Lenovo has abandoned the protruding edges for rounded edges, much more pleasant during handling.

lenovo yoga 7i carbon

The Lenovo Yoga 7i Carbon does not reveal its carbon fiber.

© Digital

We find this sobriety in the opening. The keyboard is typical Lenovo, with its keys having rounded bottom edges. The screen integration is particularly successful and our touch screen version even offers a finish worthy of a matte screen.

lenovo yoga 7i carbon

The interior of the Yoga 7i Carbon is particularly sober.

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The backlit keyboard offers pleasant typing. Please note that Lenovo has integrated several shortcuts that are not specified on the keys. The combination Fn+R allows you to change the screen refresh rate and Fn+P allows, when it works, to change the performance profile in Lenovo Vantage, the application that manages all PC settings.
The touchpad allows our fingers to slide smoothly. If it is of adequate size, we would have liked it to gain in width. Drag and drop with the touch of a finger is a bit steep and difficult to perform. Finally, the left and right buttons sink into the trackpad.

lenovo yoga 7i carbon

A fingerprint reader is missing on this Yoga 7i Carbon.

© Digital

If the previous version of the Lenovo 7i Carbon offered a variety of connections, this is far from the case with the 2022 version. You will have to content yourself with the ThunderBolt 4 port on the left edge and a USB-C 3.2 port (10 Gb/s) on the opposite edge. Lenovo provides a USB-C hub with HDMI, VGA (!), USB 3.0 port and connector, but we are sorry that this connection is not placed directly on the chassis, especially since Lenovo has found space to accommodate a switch to turn off the webcam. .

lenovo yoga 7i carbon usb-c

The right edge has the power button, a switch for the webcam, and a USB-C port.

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Wireless connectivity is provided by the Intel AX211 chip which provides the Yoga 7i Carbon with 2400 Mb/s Wi-Fi 6E and Bluetooth 5.2. As for the webcam, the 720p sensor does not work miracles and will be enough for video. Note that it does support Windows Hello to unlock the PC though, as this Yoga doesn’t have a fingerprint reader.



In the shadow


good light conditions

Processor cooling is provided by a single fan blowing across a radiator, which is connected to the processor via a heat pipe. After 15 minutes of coding, we noticed almost 50°C at the top of the keyboard. Obviously, in everyday use you won’t get these temperatures. On the other hand, noise pollution is contained (35.6 dB measured in our new audio lab). In use, and even heavily used, the Yoga 7i Carbon remains relatively unobtrusive; the breath will not disturb your neighbors from open spaces.

lenovo yoga 7i carbon

The temperature of the entire burgundy part is above 45°C.

© Digital

Access to components is easy. It is enough to remove 6 Torx screws to reveal the entrails of the Yoga 7i Carbon. Unfortunately, you will only be able to replace the battery and SSD, the rest of the components are soldered.

lenovo yoga 7i carbon

Only the SSD can be upgraded on the Yoga 7i Carbon.

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Editor rating: 4 out of 5

Performance

Lenovo lent us a Yoga 7i Carbon equipped with an Intel Core i7 1260P processor accompanied by 16 GB of RAM and a 1 TB SSD. This 12th generation processor features a hybrid architecture composed of 4 hyper-threaded “Performance” cores and 8 called “Efficient ”. ”, that is, 16 logical cores, all in a 28 W thermal envelope that can range from 20 to 60 W depending on the Lenovo configuration.

performance intel core i7-1260P lenovo yoga 7i carbon

Performance index of the Lenovo Yoga 7i Carbon and its Intel Core i7-1260P processor.

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The Lenovo Yoga 7i Carbon and its Core i7-1260P score a performance index of 117 in our tests. It thus allows itself to be more efficient than the Ryzen 7 6800 of the Asus ZenBook S 13 Oled (111) or the Apple MacBook Air M2 (112). On the other hand, it logically falls far behind the Alienware X14 and its Core i7-12700H (index of 158) which does not play in the same category.

In practice, during our coding, the Core i7-1260P that equips this Yoga 7i Carbon runs on average at 2.43 GHz for the P-Core and 1.83 GHz for the E-Core, with respective maximums of 4.11 GHz and 2.89 GHz. The given power envelope is respected, with an average of 28 W and a maximum of 47 W when conditions allow it.

The 1TB SSD is a Samsung PM9A1, the integrator-reserved equivalent of the Samsung 980 Pro. It achieves speeds of 6.3GB/s read and 5GB/s write on the Yoga 7i Carbon.

Editor Rating: 2 out of 5

Audio

As in most laptops, the speakers are placed under the PC, always with the same drawbacks: a representation that depends on the support and possible clogging with the palms of the hands.

Listening, the Yoga 7i Carbon produces a decent volume of sound, but the spectrum is narrowed down to the middle. The general representation gives the impression that the sound comes out of a box and a sibilance is heard in the “s”

lenovo carbon 7i yoga speakers

The size of the speakers is generous, but the playback quality is not its forte.

© Digital

We tested the headphone output of the Lenovo-supplied adapter and it didn’t shine with its performance. The output power is relatively low and the rest of the characteristics are below the usual average.

Lenovo Yoga 7i Carbon Average PC Tested
output level 126mVRMS 157mVRMS
Distortion+Noise 0.01% 0.014%
dynamic range 90dB 100dB
crosstalk -54dB -64dB
Editor Rating: 3 out of 5

Mobility / Autonomy

The Lenovo Yoga 7i Carbon and its 870g will easily find its way into your backpack. And it is not its size close to an A4 sheet that will penalize it (30 x 20.6 cm). Its 65W charger is also very compact. Only regret, your USB-C cable is not detachable.

lenovo yoga 7i carbon hub usb-c charger

The 65W charger is compact, while the white color of the USB-C hub looks inadequate.

© Digital

Intel Evo certified, the Lenovo Yoga 7i Carbon should achieve 8 hours of daily use on paper according to Intel specifications. In our test protocol of streaming video on Netflix, under Chrome, at 200 cd/m² brightness with headphones at 50% volume, the Lenovo Yoga 7i Carbon lasts just under 7 hours. This is explained by the battery capacity of 50.2 Wh; by comparison, the Dell XPS 13 Plus has a 55 Wh battery and the Asus ZenBook S 13 Oled has a 65 Wh battery.

lenovo yoga 7i carbon autonomy

The Carbon’s battery life is a bit disappointing for an Intel Evo-certified PC.

© Digital

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