Test Lenovo Legion 5 : un PC portable gaming performant en Radeon RX 6600M

  • 15

The hull of the Lenovo Legion 5 is dressed in midnight blue plastic, which is found around the keyboard. The bezels of the slab are grainy black plastic, as is the bottom shell. The hinge is slightly advanced on the chassis or, depending on the point of view, the chassis protrudes 3 cm behind the screen.

© The Digital

When opened, the computer reveals a keyboard with a numeric keypad. The positioning of the keys turns out to be relatively dense, but Lenovo has taken care to shift the arrow keys downwards. The keyboard is backlit on two levels and the Fn-Space shortcut switches between each mode. Typing is pleasant and the keyboard does not suffer from any notable defect. The touchpad, barely wider than the space bar, offers good gliding and good feedback from right and left clicks. Relatively hard, the middle click does not allow dragging and dropping while maintaining pressure.

© The Digital

The Legion 5’s connectivity is particularly rich with, on the left, a USB Type-C port and the headphone / microphone combo jack. On the right are a USB 3.0 port, a switch for the webcam and a PC power light. The latter is also duplicated with the start button placed above the keyboard and accompanied by an LED. Finally, between the two vents on the rear part of the chassis, there are also three USB 3.0 ports, the proprietary format charging socket, an HDMI 2.1 port, an RJ45 port, as well as a Power Delivery compatible USB Type-C port. and DisplayPort.

The connectors are located, for the most part, behind the screen.  © The Digital

The connectors are located, for the most part, behind the screen. © The Digital

Wireless connectivity is provided by the Intel AX201 chip offering wifi 6 (2400 Mb/s) and Bluetooth 5.2. The 720p webcam present above the screen is once again of mediocre quality, with a fairly marked blurring effect in the details.



In the shadow.


With good light.

Cooling is provided by two fans that blow on four radiators located in the corners under the hinge of the screen. Lenovo allows a change of energy profile without going through software thanks to the FN-Q keyboard shortcut. The start button LED then changes color depending on the selected mode: blue for silent, white for automatic and red for turbo mode.

© The Digital

In turbo mode, we noted a maximum temperature of 42.3°C between the arrow keys. The Z, Q, S and D keys remain relatively cool with 37.6 ° C measured. Thus, the right part of the keyboard is the hottest part of the chassis, just above the Radeon RX 6600M and its 100 W TDP. The vents of the RTX 3060 are much warmer (55.7°C and 49.6°C) than those dedicated to the Ryzen 7 5800H (50.5°C and 46.6°C).

© The Digital

Noise pollution is contained in silent mode, with 38.1 dB recorded in game. In automatic mode, the Legion 5 is heard more with 44.6 dB. However, we remain in the average of what laptops offer gaming. In turbo mode, on the other hand, the computer is disturbing with 49.3 dB measured, causing the writing of Digital comments from office neighbours.

With the game Assassin’s Creed Valhalla, we also observed a significant difference in performance depending on the profile: 57 fps in silent mode, 72 fps in auto mode and 78 fps in turbo mode.

Components are accessed by removing ten Phillips screws. The hull is however difficult to unclip. We advise you to start from the front using an old bank card or a specific tool. The most difficult part is at the level of the ventilations, firmly clipped. All you have to do is lift the shell to release all the rear connectors.



Without heatsinks.


With heatsinks.

Once opened, there is a free M.2 slot on the left, under an aluminum plate held by three screws. Under the square aluminum plate are two DDR4 slots. Under the right aluminum plate are housed the SSD in M.2 format and the wifi card. The battery is not glued and comes free after removing four screws. On our model, Lenovo has selected an 80 Wh battery occupying the entire width of the chassis.

Our Lenovo Legion 5 features an AMD Ryzen 7 5800H processor with 8 multithreaded cores, accompanied by 16 GB of RAM and a 512 GB SSD. In practice, the processor reaches a maximum of 4.4 GHz during our encoding under HandBrake, with an average of 3.9 GHz.

© The Digital

The Ryzen 7 5800H offers high performance. On our practical test panel, it obtains a performance index of 126, in line with that expected. It is slightly more efficient than an Intel Core i7-11800H (123), and logically behind the Ryzen 9 5900HX and the Intel Core i9-11980HK.

For its part, the NVMe type SSD reaches 3.6 GB / s in reading and 2.3 GB / s in writing. We didn’t see cache overflow, even when moving our footage to test Adobe’s Premiere editing software.

The graphics part is therefore provided by the Radeon RX 6600M from AMD. The TGP can reach 100 W thanks to the SmartShift function, which allows switching unused power from the processor to the GPU and vice versa depending on the situation. Since the Lenovo Legion 5 does not have a MUX chip, it is necessary to disable hybrid mode in Lenovo Vantage to get the best performance from the graphics card.

© The Digital

The Radeon RX 6600M obtains an index of 131, handicapped by its performance in raytracing. For comparison, it is systematically behind the GeForce RTX 3060 and far behind the Radeon RX 6800M (147).

Number of frames per second depending on the games (the bigger the better).  © The Digital

Number of frames per second depending on the games (the bigger the better). © The Digital

In game, the Lenovo Legion 5 and its RX 6600M achieve convincing results with more than 60 fps, all the graphic details pushed to the maximum; except in Cyberpunk, whose Psycho settings strain the framerate. In raytracing, the RX 6600M does well only in Godfall, the rest of our panel being unplayable with this rendering.

In competitive and less demanding games, the Radeon RX 6600M should easily reach the limits of its 165 Hz panel, or 165 fps.

As mentioned above, Lenovo has swapped the 120 Hz Full HD IPS panel for a model that is also Full HD but benefits from a 165 Hz refresh. A point to check when buying, especially since this new screen is much better.

© The Digital

The passage under our probe confirms that Lenovo was well inspired to equip its Legion 5 with this screen signed BOE. The colorimetry is perfect with a delta E of less than 3 (2.3), the color differences being imperceptible to the human eye. Just like responsiveness with 10 ms of measured latency. The contrast is rather weak with a value of 1112:1, far from the best IPS panels which peak lately at around 1400:1. In use, the blacks will therefore be grey. The color temperature is 6253K, slightly below the video standard of 6500K. The brightness, meanwhile, just exceeds 300 cd / m², an acceptable value for a PC intended for sedentary use. Note, however, that thanks to the matte panel, the reflectance is relatively low (17.6%). You will therefore not have to orient your screen according to the lighting or the surrounding windows.



Points forts

  • Responsive, color-accurate display.

  • Connectors provided.

  • Access to components and battery.

Weak points

  • Autonomy.

  • No MUX chip: it is mandatory to activate or deactivate the hybrid mode depending on the activity.

  • Impressive and very heavy loader.

Conclusion

we tested we liked

Lenovo corrects the main defect of its Legion 5 by equipping it with a new 165 Hz panel that is more responsive and, above all, with more faithful colors. On the performance side, the Ryzen 7 5800H processor does wonders; the AMD Radeon RX 6600M graphics card offers an interesting performance, but lacks versatility compared to the competition.

Sub Notes

  • Construction

  • Performances

  • Games

  • Screen

  • Audio

  • Mobility / Autonomy

The hull of the Lenovo Legion 5 is dressed in midnight blue plastic, which is found around the keyboard. The bezels of the slab are grainy black plastic, as is the bottom shell. The hinge is slightly advanced on the chassis or, depending on the point of view, the chassis…

The hull of the Lenovo Legion 5 is dressed in midnight blue plastic, which is found around the keyboard. The bezels of the slab are grainy black plastic, as is the bottom shell. The hinge is slightly advanced on the chassis or, depending on the point of view, the chassis…

Leave a Reply

Your email address will not be published.