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Cooling system of the Lenovo ThinkPad E15 is overtaxed with AMD Radeon RX 640

Cooling system of the Lenovo ThinkPad E15 is overtaxed with AMD Radeon RX 640
Cooling system of the Lenovo ThinkPad E15 is overtaxed with AMD Radeon RX 640
The Lenovo ThinkPad E15 does not only get extremely hot in our review, it also suffers from throttling. An overall problematic situation that makes us question the purpose of the AMD GPU in here.

Shortly after receiving the Lenovo ThinkPad E15, we discovered that the affordable Lenovo E15 has  a massive problem with heat management. Nearly 70 degrees Celsius at the bottom is a result that we do not want to see, ever. Even though this result comes from an extreme scenario, it is still unsettling. In the less demanding Witcher 3 test, the chassis was not a lot cooler.

In our comprehensive review, we revealed that the high temperatures are are not the only issue of the cooling system. The performance suffers as well, since Lenovo seemingly uses a much too weak cooling system. The combination of the Intel Comet Lake CPU and the AMD Radeon GPU is simply too much for the single fan with its solitary heat-pipe.

This problem already revealed itself in the gaming benchmarks, as the AMD Radeon RX 640 suffers from spontaneous performance drops. When both the CPU and GPU are stressed, both chips have to lower their clock rates, the CPU even to 400 MHz. Immediately after the stress test, the CPU is not running as fast as it normally does.

All of this lets us surmise that we can not recommend the Lenovo ThinkPad E15, at least not when it is configured with an AMD GPU. Without the dedicated GPU, it could be an interesting choice. Another review of this ThinkPad laptop could certainly be of interest, as the difference between the AMD and Intel GPU versions might be huge.

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> Notebook / Laptop Reviews and News > News > News Archive > Newsarchive 2020 03 > Cooling system of the Lenovo ThinkPad E15 is overtaxed with AMD Radeon RX 640
Benjamin Herzig, 2020-03-22 (Update: 2020-03-20)
Benjamin Herzig
Editor of the original article: Benjamin Herzig - Editor
In 2010 I started to get more and more involved with technology, especially notebooks have been my passion ever since. Of course I came across the detailed tests of Notebookcheck very quickly. With time I learned more and more about notebooks and started writing small reviews about notebooks in forums and blog pages. To earn some extra money during my studies I turned my hobby into my profession and joined the team of Notebookcheck in 2016. My personal interest is especially in business notebooks.