ASUS Zenbook 14 OLED (UX3405) review – premium 14-incher with superb OLED panel and Meteor Lake-H CPU options

Temperatures and comfort, Battery Life

Max CPU load

In this test we use 100% on the CPU cores, monitoring their frequencies and chip temperature. The first column shows a computer’s reaction to a short load (2-10 seconds), the second column simulates a serious task (between 15 and 30 seconds), and the third column is a good indicator of how good the laptop is for long loads such as video rendering.

Average P-core frequency; Average E-core frequency; Average LP E-core frequency; CPU temp.; Package Power

The Intel Core Ultra 7 155H is a powerful CPU with 16 cores and 22 threads. In short and medium loads, the modest-looking cooling solution of the ASUS Zenbook 14 OLED (UX3405) is doing a great job because the P and E cores can boost way above their official base limits. The 102°C temperatures in the second column show that the thermal system is pushed to its limits. In long loads, the processor temperature settles at 78°C which is good. On the other hand, the frequency of the P cores is below the default value of 1.40 GHz while the clock of the E and LP E cores is above the base specs.

Gaming comfort

When the fan is set to “Performance mode” in the MyASUS app, the noise levels are high even in short loads. Still, the fan isn’t as loud as a jet fighter but you can definitely hear it. In prolonged periods of 100% CPU load, the noise is lower as well as the processor clocks. In this scenario, the keyboard deck feels warm but not too hot. For normal daily usage, the “Whisper mode” fan mode offers a combination of low noise and good enough performance for normal tasks such as Web browsing or watching 4K videos.

Battery

Now, we conduct the battery tests with the Windows Better performance setting turned on, screen brightness adjusted to 120 nits and all other programs turned off except for the one we are testing the notebook with. This notebook’s 75Wh battery pack lasts for 25 hours of Web browsing or 14 hours and 17 minutes of video playback. The result is astonishing! To achieve that, you have to apply the “Balanced” preset in the Windows “Power & Battery” menu, select the “Standard fan mode, turn off Noise Cancelling completely, and use the “Dynamic refresh rate” option in the My ASUS app.

Video playback

Brightness: 180 nits; Display Mode: SDR
Time to Full Discharge: Higher is Better

ASUS Zenbook 14 75Wh, 4-cell

12h 33m

MSI Summit E14 Flip 72Wh, 4-cell

9h 30m-24.3%

Lenovo Yoga 9i 14

10h 01m-20.2%

Lenovo Yoga 7i 14 71Wh, 4-cell

9h 04m-27.8%

Lenovo ThinkPad P14s Gen 4 52.5Wh

6h 20m-49.5%

Dell Vostro 5630 54Wh, 4-cell

8h 37m-31.3%

Acer Swift Go 14 65Wh

9h 30m-24.3%

Acer Swift X 76Wh, 4-cell

8h 29m-32.4%

Acer Swift Edge 54Wh, 3-cell

5h 35m-55.5%

Web surfing

In order to simulate real-life conditions, we used our own script for automatic web browsing through over 70 websites.

ASUS Zenbook 14 75Wh, 4-cell

25h 00m

MSI Summit E14 Flip 72Wh, 4-cell

14h 17m-42.9%

Lenovo Yoga 9i 14

10h 55m-56.3%

Lenovo Yoga 7i 14 71Wh, 4-cell

14h 17m-42.9%

Lenovo ThinkPad P14s Gen 4 52.5Wh

9h 05m-63.7%

Dell Vostro 5630 54Wh, 4-cell

9h 05m-63.7%

Acer Swift Go 14 65Wh

11h 29m-54.1%

Acer Swift X 76Wh, 4-cell

10h 50m-56.7%

Acer Swift Edge 54Wh, 3-cell

6h 40m-73.3%

Author: Nikolay Palaozov

Author: eng. Kroum NikolovHead of Engineering at LaptopMedia.com, inventor and innovator with 40+ years of experience in electronics and high technology.

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