Lenovo ThinkBook 15 Gen 4

LaptopMedia.com Laptop Specs Lenovo ThinkBook 15 Gen 4 (Intel) Lenovo ThinkBook 15 Gen 4

Date Published: 23 Nov 2025

Intel Core i7-1255U
Intel Iris Xe Graphics G7 (96EU)
15.6”, Full HD (1920 x 1080), IPS
1000GB SSD
40GB RAM
1.70 kg (3.7 lbs)

TOTAL SCORE

7.4 Portability Very Good

7.0 Display Very Good

6.1 For Work Good

3.7 For Gaming Mediocre

Best Prices Specs Review Display For Work For Gaming

Lenovo ThinkBook 15 Gen 4

$1279^.00 $1219^.99

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Review

Lenovo ThinkBook 15 Gen 4 in-depth review

One of the youngest members of the Lenovo laptop family, the ThinkBook is here to get a certain group of people. Those, who need a secure business notebook, but have a foul opinion of the ThinkPad series. Those, who are repulsed by its "dated" look. A feature that has actually given it a huge fan group.Well, on the bright side, the ThinkBook looks really sleek. Sharp lines and a two-tone Grey finish make the ThinkBook 15 Gen 4 a lot more appealing. However, looks would be meaningless if the laptop doesn't perform up to the task.This is why you get a choice of Alder Lake processors. If you need a more efficient machine, that will be quiet and will still deliver a decent amount of performance, then the U-series will be fine. However, if you need the grunt of a P-series processor and[...]

Read the full review

Pros

Adequate price tag
1x SODIMM + 2x M.2 PCIe x4 Gen 4 slots
Thunderbolt 4 and Wi-Fi 6 connections + SD card reader on board
The power button is equipped with an optional fingerprint reader
Sustains the larger 28W power limit
Doesn't use PWM for brightness adjustment (LEN156FHD (LEN9052))
It has comfortable viewing angles and a good contrast ratio (LEN156FHD (LEN9052))

Cons

Build quality is not the best
Unsatisfactory iGPU performance
Average battery life
Covers only 50% of sRGB (LEN156FHD (LEN9052))

Disassembly, maintenance and upgrade options

Upgradeable memory and super fast SSD speeds make the ThinkBook 15 Gen 4 a laptop worth buying.Check out all Lenovo ThinkBook 15 Gen 4 prices and configurations in our Specs System, or read more in our In-Depth review.1. Remove the bottom plate To pop this laptop open, you need to undo a total of 10 Phillips-head screws. Then, pry the bottom panel, starting from the front. It is best to use a plastic tool.2. Remove the battery Our configuration features the smaller 45Wh battery pack. It lasts for 7 hours of Web browsing, or 5 hours of video playback. To remove it, unplug [...]

DISPLAY: 15.6-inch, 1920x1080, IPS

Name
LEN156FHD (LEN9052)

Diagonal
15.6"

Pixel density
141.21 ppi

Brightness
276 cd/m²

sRGB
51%

PWM frequency
No PWM (Flicker-Free)

Panel Type
IPS

Resolution
1920x1080

Becomes "Retina" from
24 inches (62 cm)

Contrast
1160:1

dE Color Checker
5.3 4.1

PWM Rating
10.0: (safe)

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Office Work

Office Work should be used mostly by users who spend most of the time looking at pieces of text, tables or just surfing. This profile aims to deliver better distinctness and clarity by keeping a flat gamma curve (2.20), native color temperature and perceptually accurate colors.

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Design and Gaming

This profile is aimed at designers who work with colors professionally, and for games and movies as well. Design and Gaming takes display panels to their limits, making them as accurate as possible in the sRGB IEC61966-2-1 standard for Web and HDTV, at white point D65.

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Health-Guard

Health-Guard eliminates the harmful Pulse-Width Modulation (PWM) and reduces the negative Blue Light which affects our eyes and body. Since it’s custom tailored for every panel, it manages to keep the colors perceptually accurate. Health-Guard simulates paper so the pressure on the eyes is greatly reduced.