HP ProBook 455/450 G3’s display is using PWM but at higher frequencies to reduce eye strain

4zu3_HP_Probook_450_G3Another day, another PWM report but this time on HP’s budget business solution – the ProBook 455 G3 and the 450 G3. The former uses all AMD hardware while the latter has an Intel CPU but the same AMD Radeon R7 M340 GPU. However, both configurations share the same panel from AU Optronics and thus have the same properties. You will find out more in our upcoming review.

You can find the notebook’s price and availability here: http://amzn.to/235Ed7J

In the meantime, we would like to post results from the PWM test from our oscilloscope. We were able to detect PWM from 0 to 99% screen brightness but at really high frequencies and as we all know, as higher the frequency gets, less negative impact on the eyesight occurs. The frequency we were able to detect is 22 kHz and compared to the 200 Hz aggressive pulsation, HP’s ProBook seems to fare pretty well in this test. Though, some users with extra sensitive eyes report some eye soreness after long hours of work.

940-PWM-HP ProBook 455 G3

Also, make sure to check out our PWM ranking table if you wish to find a flicker-free notebook for yourself.

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