Lenovo Legion 7i Gaming Laptop Review 2020

OUR VERDICT

  • High performance
  • Thin bezels
  • Display is much brighter
  • Pretty impressive color gamut results in nice color accuracy
  • Thunderbolt port
  • Long-lasting battery
  • Smooth, accurate, and responsive glass precision touchpad
  • Better cooling system
  • Arrow keys are enough bigger in size and well-placed
  • Pretty tactile keyboard
  • Fingerprint doesn't really show up
  • Pretty solid all-metal build
  • 180-degree hinge
  • Opens by just one finger
  • Per-Key RGB backlighting
  • Fans become noisy at max speakers
  • Palm rest feels some vibration at max speakers
  • WHAT IT CAN DO
  • Web Programming
  • Android Programming
  • Desktop Programming
  • PC-Game development
  • Graphics & Video Editing
  • Small-scale Deep Learning
  • Run high-end PC games
  • WHAT IT CAN'T DO
  • iOS/Mac Programming
  • Medium to high-level of machine learning
Buy at Amazon

Hello guys! What's up? In this article, I am going to review the Lenovo Legion 7i Gaming laptop. The review unit which I have received is not a brand-new, it's 7 months used one of the high-tech configuration model received from New Delhi for making the review on it. The following are the specs of the review unit that I got.

The Lenovo Legion 7i is one of the most interesting gaming laptops. It can be used for programming, especially for small-scale machine learning. So, let's dig into it and find out what it can do for you guys.

Table of Contents

Lenovo Legion 7i's Technical Specs

  • CPU: 5.0GHz 10th Gen Intel Core i7-10750H Processor | 6 Core.
  • GPU: Dedicated NVIDIA GeForce RTX 2070 8GB GDDR6.
  • RAM: 3200MHz 16GB DDR4
  • Storage: 1TB PCIe NVMe SSD.
  • Display: 15.6-inch FHD Display | IPS technology | 144Hz refresh rate.
  • Battery: 80Wh 4 Cell Li-ion battery | Lasts up to 1 hour and 24 minutes on Gaming.
  • Weight: 4.98 Pounds (2.26 kg)
  • Product dimension: 36 x 25.5 x 2 cms
  • Ports: 1 USB Type-C (thunderbolt-3 supports), 1 Display Port, 1 3.5mm audio jack, 2 USB Type-A 3.1 Gen 2, HDMI 2.0, Power input, Gigabit Ethernet, and Kensington Lock

The Build Quality and Material

Lenovo Legion 7i build material information. It has all-metal build to provide a pretty high strength in average to low weight.
The all-metal build gives pretty high strength in average weight to the Legion 7i.

This Lenovo Legion 7i laptop has an all-metal build with a slate-grey finish. In addition to that, the overall build feels quite sturdy with no sharp edges or corners. Furthermore, My testings and usage for 5 days revealed that this machine has above an average build quality. It's really nice.

The weight of the Lenovo Legion 7i being measured using Propert. The weight found 4.98 lbs (2.3 Kg) for laptop only and 6.89 lbs (3.13 kgs) for laptop with charging cable.
7i Doesn't feel heavy when tested for weight and with charging cables. Weight of the Lenovo Legion 7i.

Also, I have checked the weight of 7i and found my configuration got 4.98 lbs (2.3 Kg) for a laptop only and 6.89 lbs (3.13 Kg) for a laptop with charging cables.

The dimension of the Legion 7i laptop. Width: 14.1-inch, Depth: 10-inch, and Height: 0.8-inch.
The 7i is just 14.1-inch wider and providing a smooth gaming experience. Lenovo Legion 7i's dimensions.

The size of this laptop is fairly standard that should be for a decent gaming laptop. It's 14.1 x 10 x 0.8 inches (36 x 25.5 x 2 cms) - W x D x H. So, the 0.8 inches thick laptop isn't too thick when compared to Dell Alienware and MSI gaming laptops.

The RGB lighting line placed at the front side and both left and right sides of the Legion 7i to make it more attractive compared to other gaming laptops.
RGB Lighting line at the front and both left and right sides for cutting edge attraction of Legion 7i laptop.

There is an RGB light line that runs along the front and both sides that gives a sudden underglow effect, more lighting from the air exhausts at back, and also from the Legion logo on the lid can be controlled using the Corsair iCUE software.

RGB lighting effect shows at the time of boot even the effects are already turned off using the Corsair iCUE software in Lenovo Legion 7i.
RGB lighting effect shows at the time of boot even the effects are already turned off using the Corsair iCUE software in Lenovo Legion 7i.

All of them can be turned into white color but here is something to note that during boot you will get RGB lighting effects and I have found no ways to stop this. For me, it isn't much distracting but for someone, it may be.

Display Quality and Color Accuracy

Size and Quality

The 15.6-inch 1080p display refreshes 144 times in a second to give you the stunning experience and it is surrounded by very thin bezels from by the three sides.
The 15.6-inch 1080p display refreshes 144 times in a second to give you the stunning experience and it is surrounded by very thin bezels from by the three sides. Legion 7i's display.

The 15.6-inch FHD (1080p) IPS display is surrounded by the 3 sides by just 7.5mm thin bezels with thick bezel from the bottom side. However, there is multiple version of the screen also available.

The Lenovo Legion 7i's display has G-Sync available but no Advance Optimus found.
The 144Hz display has also G-Sync available for better visual experience. It could be more better if Advanced Optimus features was provided. But, Overall pretty fine, because majority of the gaming laptops can't come with G-Sync enabled display.

The screen of this laptop has a 144Hz refresh rate with G-Sync available and no feature of Advance Optimus. My unit has come with G-Sync available display, but not all the models have it. The highest configuration variant has a 240Hz display. See, below the screen's average Gray to Gray response time.

The average Gray to Gray screen response time of Lenovo Legion 7i laptop. The average G2G response time is 7.63 ms which is not too high but not incredible also.
Average Gray to Gray Screen response time of Lenovo Legion 7i Gaming Laptop. Well, the results are not bad but not incredible also. It's just fine.

The screen's average Gray to Gray response time 7.63 ms that I got in my testings, which is not incredible but not too high. Note that the low response time is recommended. If you need to what these numbers states mentioned in the just above image, you can read my article on the explanation of G2G response time.

Color Accuracy

The Legion 7i's display is tested for the color gamut results using the Spyder 5 PRO. The results are 100% of SRGB, 96% of NTSC, 100% of AdobeRGB, and 90% of DCI-P3.
The Legion 7i's display is found to be more color accurate even more than Apple's MacBook Pro. You gonna find it extremely useful in content creation.

I have tested the screen's color gamut and nits using Spyder 5 Pro. So, the following are the results that I got in my testings.

  • 100% of SRGB
  • 96% of NTSC
  • 100% of AdobeRGB, and
  • 90% of DCI-P3
The Legion 7i's Display NITS measured for different levels of brightness. At 100% of brightness, the display reached 474 nits which makes it pretty bright display than the average gaming laptops.
The Legion 7i's Display NITS measured for different levels of brightness. The display seems pretty bright but not than Razer Blade Pro 17.

The display got 474 nits at 100% of brightness and a 970:1 contrast ratio which is pretty high but less than Razer Blade Pro 17. So, overall, very good color gamut, nits, and contrast for a gaming laptop. The display, In my opinion, Fits best in the category of laptops that are used for content creation.

Is there any Flex?

The Lenovo 7i's display has some flex when intentionally moving it. But, the overall build feels pretty solid due to the all-metal body.
The Legion 7i's display found to have some flex but not problematic. It feels pretty sturdy and for which, you must thanks to the all-metal build if buy this laptop.

My tests revealed that there is some screen flex when intentionally moving it. Also, I have noticed that the laptop was slightly sliding during the flex tests. But, the overall screen build feels quite sturdy, thanks to the metal exterior.

The Legion 7i was moved intentionally here and there using one finger to check whether it is grippy or not. And, this machine found not grippy.
The Legion 7i is not much grippy, hence easy to move it with little to fewer efforts when compared to Dell Alienware giants.

In addition to that, the lags are not grippy. So, it is possible to move the machine with little to fewer efforts.

Legion 7i comes with fairly evenly distributed weight between the lid and rest of the part which makes it easier for us to open it by  just one finger.
Legion 7i comes with fairly evenly distributed weight between the lid and rest of the part which makes it easier for us to open it by just one finger.

It's possible to open the display using just one finger. So, What does it tell? It gives information about the evenly distributed weight between the display and the rest of the parts of the laptop connected with the hinge.

The giant Legion 7i has a 180-degree hinge at both back corners that allows the display turn right back nearly parallel to the keyboard.
The giant Legion 7i has a 180-degree hinge at both back corners that allows the display turn right back nearly parallel to the keyboard.

The hinges are found at the back corners and let the display turn to 180 degrees. So, you can use it on the bed with no problem that you may face with 145-degree hinge laptops.

Keyboard - Tactile, Flex, Build, and RGB Backlit?

Flex Info and Build Quality

The Lenovo Legion 7i's keyboard was tested for flex. It was pressed down hard intentionally. So, some flex found. But, during normal use, there is not a single problem due to all-metal sturdy build.
Legion 7i's keyboard tested for flex but found sturdy enough Surprisingly. The flex doesn't occur during normal use, note that.

There is some keyboard flex on this laptop when pushing the keyboard down hard intentionally. But, it immensely feels sturdy, thanks to its metal build.

Per-Key RGB Backlighting

The Legion 7i's keyboard has per-key RGB backlighting.
The keyboard has Per-Key RGB backlighting which is pretty awesome.

The keyboard has a Per-Key bright RGB backlighting which illuminates all keys and secondary keys function. And, it can be controlled through the Corsair iCUE software coming with the laptop. In that software, there is several effects and customization that can be made easily.

Corsair iCUE software to control the performance and lighting effects on Lenovo legion 7i. It comes pre-installed.
Corsair iCUE software to control the performance and lighting effects on Lenovo legion 7i. It comes pre-installed.
The Lenovo Legion 7i has well-placed and bigger in size four arrow keys. The size is enough for better gaming.
The Lenovo Legion 7i has well-placed and bigger in size four arrow keys. The size is enough for better gaming.

On the keyboard, Something from which I really got impressed is the big and well-placed arrow keys. While playing The Witcher 3, I found no chances of the miss-press the arrow keys.

Tactile Feedback

The Legion 7i Gaming laptop has pretty nice tactile feedback, thanks to the decent key travel of 1.3mm distance when pressed.
The Legion 7i Gaming laptop has pretty nice tactile feedback, thanks to the decent key travel when pressed.

During typing, the keys travel 1.3mm amount distance. The keyboard isn't noisy and despite less than 1.5mm keys travel when pressed, It has given the pretty tactile feedback. So, you will get a better typing experience on this tactile feedback keyboard. You're lucky now, otherwise you have to look for other gaming laptops or an external gaming keyboard.

Touchpad - Precision, Smooth, and Accurate?

A very smooth and responsive glass touchpad of Legion 7i machine. It handles the gestures pretty accurately, thanks to the precision drivers. It's 4.13 x 2.76 inches large for better experience.
A very smooth and responsive glass touchpad of Legion 7i machine. It handles the gestures pretty accurately, thanks to the precision drivers.

The precision glass touchpad is smooth, clicks down anywhere, and feels nice to use. I found it very responsive and accurate in handling the gestures, So, no need to buy an external gaming mouse. Although, I recommend buying so for better entertainment. It also supports all user gestures. However, It isn't much big but not much smaller, Its size is just 4.13 x 2.76 inches (10.5 x 7 cms).

Fingerprints

The matte finish interior of lenovo legion 7i laptop doesn't really show up much fingerprints. And, it is easy to clean also.
The matte finish interior of lenovo legion 7i laptop doesn't really show up much fingerprints. And, it is easy to clean also.

A fingerprint does appear but it difficult to see on the matte finish. And, as the surface is clean, it is easy to clean using micro-fiber cloths.

Processor and Graphics Chip

The bottom panel is removed from the Lenovo Legion 7i to let you see the CPU and GPU chip.
CPU and GPU chips after removing the bottom panel in Legion 7i.

This Lenovo Legion 7i is powered by an Intel Core i7 processor with a dedicated NVIDIA Graphics chip with 8GB GDDR6 memory. It has a 16GB of 3200MHz DDR4 RAM and 1TB SSD for the smooth and optimized performance.

I have played various PC-Games to check the FPS (Frames per seconds) marks of Lenovo Legion 7i.
I have played various PC-Games to check the FPS marks of Lenovo Legion 7i.

I have played various PC-games on it to check the FPS marks and other details like thermal management. The following images show the performance of this gaming laptop.

CPU's Single and Multi Core score measured using Cinebench R20 for Legion 7 machine. So, pretty low in quiet mode but fairly high in Performance mode with CPU undervolting.
CPU's Single and Multi Core score measured using Cinebench R20 for Legion 7 machine. So, pretty low in quiet mode but fairly high in Performance mode with CPU undervolting.

I have run the Cinebench R20 3 times and showed the average results of the three tests. The score tells that in Quiet, Single and Multi-Core scores are pretty low compared to Balanced, Performance, Performance + Cooling Pad, and Performance mode with 0.1v CPU undervolting.

Furthermore, the Cinebench Score also gives information about whether you have to use a cooling pad or not. In my testings, There is almost no difference between the tests in performance mode alone and performance mode with a cooling pad. But, undervolting the CPU has shown a considerable peak in the multi-core score.

CPU and GPU Average Clock Speed measured in MHz for 6 different modes in Gaming and Stress Tests on Lenovo Legion 7i laptop.
CPU and GPU Average Clock Speed measured in MHz for 6 different modes in Gaming and Stress Tests on Lenovo Legion 7i laptop.

My tests of CPU and GPU average clock speed in a different mode with a cooling pad revealed that it's not possible to achieve the 5.0GHz clock speed. I was just able to reach 4GHz during Gaming in Performance mode with a cooling pad and 0.1v undervolted CPU.

In addition to that, Undervolting the processor in gaming has shown an effect on lowered GPU clock speed in performance mode from 1557 to 1510 and during stress tests, the same found decreasing from 1460 to 1440.

But, what these numbers tell to you?

The higher the clock speed, the better the performance you will get. So, I have tested the following 5 ways to measure the possible CPU and GPU clock speed.

  • Gaming/Stress - Quiet
  • Gaming/Stress - Balanced
  • Gaming/Stress - Performance
  • Gaming/Stress - Performance + Cooling Pad
  • Gaming/Stress - Performance -0.1v CPU UV
  • Gaming/Stress - Performance -0.1v CPU UV + Cooling Pad

So, the highest clock speed achieved was the last way (Gaming/Stress - Performance -0.1v CPU UV + Cooling Pad).

CPU and GPU's average power limit measured on Legion 7i machine for 6 different modes in during both Stress test and Gaming. With a increase in mode level, GPU power limit decreases and for CPU it increases.
CPU and GPU's average power limit measured on Legion 7i machine. With a increase in mode level, GPU power limit decreases and for CPU it increases.

The above clearly states that an increase in performance doesn't show any considerable change in the power limit of GPU. But, for CPU it is quite low in quiet mode - just 24.9 in gaming and stress tests and raised to 45.6 watts and 52.3 watts in stress and gaming tests respectively in the last mode.

Also, I have noticed that in both gaming and stress tests, undervolting the CPU has shown a little bit more decrease in the power limit of GPU. In stress tests, It was dropped to 83.2 from 81.3 and in gaming tests, the same drop happened from 85.7 to 82.5. So, I recommend playing games in the last mode which enhances the performance.

Shadow of the Tomb Raider's FPS data on Lenovo Legion 7i for the 3 different modes.
Shadow of the Tomb Raider's FPS data on Lenovo Legion 7i for the 3 different modes.

The above shows the Frames Per Second (FPS) in the different gaming modes of a laptop. It gives you an idea of how these modes are different from one another in terms of performance, CPU and GPU power limit, and clock speed including the temperatures.

In the performance mode, I got 89 Frames while in quiet mode I just achieved 85 frames. Also, note that in gaming laptops, these frames are subject to drop when the machine is in continuous use. Also, see the FPS data that tells the Frames I was able to get during the last mode in Shadow of the Tomb Raider, Far Cry 5, and Battlefield V.

I have played Shadow of the Tomb Raider, Far Cry 5, and Battlefield V on Lenovo legion 7i and collected the FPS data and shown you using this chart.
I have played Shadow of the Tomb Raider, Far Cry 5, and Battlefield V on Lenovo legion 7i and collected the FPS data.
Exported the 16:13 long video in YouTube 4K H.264 present for 5 times and the results are in front of you guys. It's pretty low (Low export time is recommended) when compared to the majority of other gaming laptops I have tested. It has exported the video in just 597 seconds on average. Moreover, this chart also contains info of other tests.
Exported the 16:13 long video in YouTube 4K H.264 present for 5 times and the results are in front of you guys. It's pretty low (Low export time is recommended) when compared to the majority of other gaming laptops I have tested.

Furthermore, It has ported the 16:13 long video file to YouTube 4K H.264 present in on average 597.2 seconds which is pretty low export time. The low export time is recommended. I have carried out 5 tests to export the same video as shown in the just above the image.

So, this is the way I used to describe the CPU and GPU performance. Now, your laptop is definitely gonna heat up when you start using it due to high-performance CPU and GPU. Hence, the thermal performance of this laptop needs to be measured. And, you gonna see the results I have achieved through my testings in the just following section.

Thermal and fans Performance - Throttling, Rise in Keyboard Temperature, and more

Thermal Performance

In the CPU and GPU's gaming and stress tests, I have measured the temperatures the hardware was touching along with the results of Average Clock Speeds, Gaming FPS, Power limit, and Video export tests.

Average CPU and GPU temperatures measured during Gaming and Stress tests on Lenovo Legion 7i. This chart consists of the temperatures for 6 different performance mode.
Average CPU and GPU temperatures measured during Gaming and Stress tests on Lenovo Legion 7i.

The above image clearly states that GPU temperature increases rapidly with an increase in mode during stress tests. But, In the case of Gaming tests, The same appeared decreasing. During Gaming tests, the use of the cooling pad shows better improvement in the temperature reduction of CPU (94 to 91 C) and GPU (79 to 74 C) from compared to CPU undervolting. And, In stress tests, Use of a cooling pad considerably reduces the temperature of both chip and CPU undervolting with it worked as an aid in my testings.

In addition to that, I have also tested for keyboard and bottom of the display for heat pick up. And, I found the following results.

Keyboard and palm rest are cool at Idle- Quiet mode in Legion 7i. The temperature measured using the temperature gun.
Keyboard and palm rest are cool at Idle- Quiet mode in Legion 7i.

At Idle - Quiet mode, The middle of the keyboard was at 33.5 degrees C whereas the left and right sides were reached 31.3 C and 24.7 C respectively. So, feels cool and not problematic for normal use.

Keyboard and palm rest are getting hotter during the balanced mode CPU+GPU stress test in Legion 7i.
Keyboard and palm rest are getting hotter during the balanced mode CPU+GPU stress test in Legion 7i.

In balanced mode, The middle of the keyboard was getting hotter. It was trying to go beyond 40 C. As you can see, My temperature gun measured 40.7 C in the middle and 33.9 and 34.9 C on the left and right sides. The touchpad found pretty cool including the bottom the display.

Keyboard and palm rest feel hotter than average during the performance mode CPU+GPU stress test in Legion 7i.
Keyboard and palm rest feel hotter than average during the performance mode CPU+GPU stress test in Legion 7i.

In performance mode, the middle of the keyboard feels hotter than average. The gun has a measured temperature of 44 C at that place. The keyboard sides were at a normal temperature range - 33 to 34 C. In addition to that, the bottom of the display was found picking up the heat.

Air intake vents underneath the legion 7 laptop to keep it cool.
Air intake vents underneath the legion 7 laptop to keep it cool.

Underneath the laptop, there are some air intake vents to suck the cool and fresh air to clean it.

Fans performance

2 Big fans underneath the laptop and exactly below the air intake vents in Legion 7i Gaming machine. Moreover, you cannot increase the fans' speed manually in this laptop.
2 Big fans underneath the laptop and exactly below the air intake vents in Legion 7i Gaming machine. Moreover, you cannot increase the fans' speed manually in this laptop.
The fans are just audible during the idle state of Legion 7i. The sound level was tested using DIGITECH meter and found average 36.3 dB in a quiet mode.
The fans are just audible during the idle state of Legion 7i.

At Idle, the fans were just audible. The Digitech sound level meter has detected 36.3 dB of the level.

The fans are just audible in the quiet mode CPU+GPU stress tests but haven't distracted me during the use in the conference room. The sound level was measured using DIGITECH meter and found 43.8 dB on average.
The fans are just audible but haven't distracted me during the use in the conference room.

During stress tests in quiet mode, the fans become audible but not distracting. The sound coming from the fans was similar to the sound comes out when a BIOS update is in process. So, my sound level meter has shown 43.9 dB.

The sound level of fans during CPU+GPU stress tests found 46 dB on average. It just a slight jump from the level measured in Quiet mode for the same tests.
The sound level of fans during CPU+GPU stress tests found 46 dB on average.

In balanced mode, there was a slight jump detected from 43.9 to 45.9 dB. So, the fans are a little louder than other gaming laptops I have tested. Also, distracting me.

The sound level of the fans reached 52.4 dB. The whole system felt noisy in the performance mode on Legion 7i.
Fans became noisy in the performance mode.

And, In performance mode, the meter has detected 52.4 dB. This mode has made all system noisy to keep the laptop cool.

Sound, Microphone, and Camera

Sound

Speakers in the Lenovo Legion 7 laptop.
Speakers in the Lenovo Legion 7 laptop.

The 2 speakers are placed at the from corners underneath the laptop. They sound pretty solid for the gaming laptop.

The speakers are enough loud and clear at maximum volume tested using DIGITECH meter. But, the Legion 7i starts slightly vibrating at the palm rest at max volume.
The speakers are enough loud and clear at maximum volume. But, the Legion 7i starts slightly vibrating at the palm rest at max volume.

The speakers are enough to clear and loud at maximum volume with the little bass present. Moreover, you will also notice the vibration on the palm rest at the maximum volume. I have also tested them using the LatencyMon. The LatencyMon results were looking good. The below image shows the results.

LatencyMon results for the speakers on Lenovo Legion 7i laptop.
LatencyMon results for the speakers on Lenovo Legion 7i laptop.

Microphone and Camera

The microphone of this laptop isn't incredible but not too bad even. It just catches the sound with noise also. Furthermore, It has no support for noise reduction.

The 720p camera is just okay. It doesn't support Windows Hello unlock. Furthermore, It has a shutter for privacy which I damn like.

Ports

Ports on the left side of the Lenovo Legion 7i laptop.
Ports on the left side of 7i laptop.

On the left side, It has air exhausts, one USB Type-C port that supports thunderbolt-3 port, one Display Port, and a 3.5mm audio jack.

Ports on the right side of the Legion laptop.
Ports on the right side of the Legion laptop.

On the right side, It has just one USB Type-A 3.1 Gen 2 port with air exhausts.

Ports on the back side of the Lenovo machine.
Ports on the back side of the Lenovo machine.

At the backside, there is an RGB backlighting two air exhausts at the corners. Then from left to right, HDMI 2.0 output, USB Gen 2 Type-A port, Gigabit Ethernet, USB Gen 2 Type-A port, Power input, and Kensington lock port.

Illuminated icons on the ports to find them easy.
Illuminated icons on the ports to find them easy.

Similar to the other laptops, There are illuminated icons at the top of each port which makes it easy for you to find the port's use and where to plug the cable in. So, by this, You don't need to look at the specs sheet or manual every time.

So, that's all for Lenovo Legion 7i. I have also reviewed other laptops as following:

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