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PWM Ranking - The Best Displays for the Eyes

Typical PWM graph of the luminance, in this case from the HP EliteBook 840 G3 at 200 Hz
Typical PWM graph of the luminance, in this case from the HP EliteBook 840 G3 at 200 Hz

PWM is short for pulse-width modulation and describes a flickering of the background illumination to reduce the luminance. Sensitive users may see this flickering below a certain frequency and get tired eyes or headaches. These problems might not even be obvious. More than 500 Hz are generally not an issue, but there seem to be many users with problems below 250 Hz. Beware, there are even reports from readers that suffer from frequencies above 10k Hz. These users should look at the individual reviews and look out for completly flat lines in our measurements as small brightness changes may lead to sore eyes, headache ... for them.

We use the following table to show the measured frequency of the flickering. Some devices do not use PWM at all, but still showed a measurable brightness flickering during our review (e. g. poor shielding of the power adapter). Those devices are listed here as well. Devices listed with a "0" did not show big brightness fluctuations in our measurements. A detailed analysis and a screenshot of the measurement is available in the linked review.

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PosModelScreen ResolutionScreen TypeResponse Times PWM Frequency
Apple iMac Retina 5K 27 Late 2015 3.2 GHz M390 MK472D/A5120x2880
0
Apple iMac Retina 5K 27 Late 2014 i7-4790K M295X5120x2880IPS
0
Apple iMac Pro5120x2880
208.3
Apple iMac 27 Mid 20205120x2880IPS
22730
Apple Studio Display 20225120x2880
0
Apple iMac 24 M1 20214480x2520IPS
0
Dell XPS 13 9300 4K UHD3840x2400IPS
0
Dell XPS 15 9500 Core i7 4K UHD3840x2400IPS
0
Dell XPS 17 9700 Core i7 RTX 2060 Max-Q3840x2400IPS
0
Dell Precision 5550 P91F3840x2400IPS
0
Dell Precision 5000 5750 P92F3840x2400IPS
0
Dell XPS 13 9310 Core i7 4K3840x2400IPS
2137
Asus ROG Flow X13 GV301QH3840x2400IPS
0
Lenovo ThinkPad X1 Carbon G9-20XWCTO1WW3840x2400IPS LED
0
Dell XPS 17 9710 Core i7 RTX 30603840x2400IPS
0
Asus Vivobook Pro 16X-M7600QE3840x2400OLED
60
Asus ProArt StudioBook 16 W7600H5A-2BL23840x2400OLED
240
Dell Precision 5000 55603840x2400IPS
0
Lenovo ThinkPad P1 G4-20Y4S0KS003840x2400IPS LED
0
PosModelScreen ResolutionScreen TypeResponse Times PWM Frequency
Lenovo ThinkPad X1 Extreme G4-20Y5CTO1WW (3050 Ti)3840x2400IPS LED
0
Gigabyte Aero 16 YE53840x2400AMOLED
60
Lenovo Yoga 9i 14 2022 i7-1260P3840x2400OLED