• CPU: Intel Core i5-7200U
  • GPU: AMD Radeon R7 M460 (2GB DDR3)
  • Display: 15.6”, Full HD (1920 x 1080), IPS
  • Storage: 256GB SSD
  • RAM: 1x 8GB DDR4
  • Weight: 2.08 kg (4.6 lbs)


  • Outstanding design and choice of materials
  • Relatively light and thin
  • Excellent touchpad and keyboard
  • Variety of ports in a budget convertible
  • Relatively low expected price for a convertible


  • Wobbly screen
  • PWM from 0 to 99% brightness
  • Underwhelming screen quality for the more expensive configurations

Lenovo Flex 4 (15″) - Specs

CPU Performance #106
  • Intel Core i3-8130U 0.2%
  • Intel Core i5-7300U 0.6%
  • Intel Core i5-7200U
  • Intel Core i7-6600U 0.2%
  • Intel Core i7-6500U 0.2%
GPU Performance #55
  • NVIDIA GeForce GTX 1050 (4GB GDDR5) 0.1%
  • NVIDIA GeForce GTX 1050 (2GB GDDR5) 0.3%
  • AMD Radeon R7 M460 (2GB DDR3)
  • AMD Radeon RX Vega 8 0.3%
  • NVIDIA GeForce GTX 965M (2GB GDDR5) 0.4%
15.6”, Full HD (1920 x 1080), IPS
panel 1
Color accuracy 5.2 -> 3.4
1x 8GB DDR4
Windows 10 Home
52.5Wh, Li-Po, 3-cell
Body material
Polycarbonate, ABS Plastic
378 x 253 x 21 mm (14.88" x 9.96" x 0.83")
2.08 kg (4.6 lbs)
Ports and connectivity
  • USB
  • Card reader MMC, SD, SDHC, SDXC
  • Ethernet LAN 100, 1000 Mbit/s
  • Wi-Fi 802.11ac
  • Bluetooth 4.0
  • Audio jack combo audio/microphone jack
  • Fingerprint reader
  • Web camera 720p HD
  • Backlit keyboard
  • Microphone dual array microphone
  • Speakers
  • Optical drive
  • Security Lock slot
Keyboard / Dock(Convertible)
Ports and connectivity
  • USB



More Lenovo Flex 4 (15″) configurations

See all Lenovo Flex 4 (15″) configurations

DISPLAY: 15.6-inch, 1920 x 1080, IPS

Name BOE NV156FHM-N42
Diagonal 15.6"
Pixel density 141.21 ppi
Brightness 276 cd/m2
sRGB 54%
PWM frequency 20500 Hz
Panel Type IPS
Resolution 1920 x 1080
Becomes "Retina" from 24 inches (62 cm)
Contrast 815:1
dE Color Checker 5.2 3.4
PWM Rating 5.1: (undesirable)
Buy Our Profiles Here


The first and most important profile (in our opinion) is the Health-Guard – when being used with our LM Profiles application, 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 (they may seem strange at first but after a few minutes our brain will start recognizing them as accurate ones – that’s how Health-Guard differs from alternatives like f.lux).

Left: No Profile | Drag the slider to see the difference | Right: Health-Guard Profile

Office Work and Web Design

The second profile type is Office Work and Web Design. Business tasks are various, most often related to a set of office-targeted applications. Sometimes, working outside is necessary. In such cases color accuracy is paramount, but so is image clarity, brightness, contrast etc. A piece of text must be legible, graphics and histograms must be clear. All of this is precisely what this profile is for. If you’re doing office work, web design, or simply value color accuracy when browsing the Internet, this is the profile to use!

It’s important to note that not all displays are suited for Web design – our profiles can not compensate for insufficient sRGB coverage (most TN panels have this problem), so you you might want to check our detailed color tests in the respective product reviews we’ve done if you want to use the machine for professional work.

Left: No Profile | Drag the slider to see the difference | Right: Design & Gaming Profile

Gaming and Movie Nights

Gaming is among the main driving forces for the fast clip of hardware development. Gamers are well-aware of the fact that a poor image can ruin the entire experience.

The same goes for watching movies. Imagine sitting down for a nice movie after a long day, and barely making out what’s on the screen. The ‘Gaming and movie night’ profile can make a huge difference. We strongly recommend you use it, since it’s gamma curve is specifically tuned to reveal details in the dark sections of the image.

Here’s what this amounts to:

Left: No Profile | Drag the slider to see the difference | Right: Design & Gaming Profile

You’ll find more information about the profiles HERE.

Buy our profiles for BOE NV156FHM-N42

In addition to receiving efficient and health-friendly profiles, by buying LaptopMedia's products you also support the development of our labs, where we test devices in order to produce the most objective reviews possible.

Office work and web design

Office work / Web design

If your field is office work or web design, or you just want your monitor's color set to be as accurate as possible for the Internet color space, this profile will prove to be useful.

Buy Now
Gaming or movie nights

Gaming or Movie nights

We developed this profile especially for occasions on which you spend a lot of time in front of your monitor with some games or watching movies – it will be easier for you to discern fine nuances in the dark.

Buy Now
Health protection


This profile reduces the negative impact of pulsation and the blue spectrum, securing your eyes and body. You still get a pitch-perfect color image, albeit slightly warmer.

Buy Now
Buy Now


Lenovo Flex 4 (15″) in-depth review

Last year's Lenovo Yoga 500 was a big hit and gradually gained popularity throughout 2015 despite its obvious flaws. However, Lenovo has returned with even better solution, named it Yoga 510 and practically took care of all the things we didn't like about the older model. It now has more polished, robust and quite exceptional build quality along with crisp IPS touchscreen with Full HD (1080p) resolution. Of course, the brains of the machine are the new 6th generation Skylake processors and f[...]

Read the full review

CPU Performance: Intel Core i5-7200U

GPU Performance: AMD Radeon R7 M460 (2GB DDR3)

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