UPDATE: A user kindly pointed out that his UX430UQ model with the 7th generation Intel CPU appears to exhibit flicker. It’s unclear whether the display panels utilizing flicker are limited to the UX430UQ models or whether they are also appearing in the UX430UA models.
We had the opportunity to examine two generations of Asus’ most popular laptop: the Zenbook UX430. The product shines as at around $900USD for the base model, it’s one of most affordable slim and light laptops on the market. Unfortunately, the displays Asus chose for this laptop will present problems for users. While we didn’t have an opportunity to measure the device with our more sensitive equipment, we can still discuss our findings.
On the UX430UA model equipped with the 7th generation Intel CPUs (ie. the Intel i5-7200), we detected no flicker using a camera with high-speed shutter, but found that polarized glasses were incompatible with the display as the orientation of the photons emitted from the display were almost entirely blocked by the glasses. For those not reliant on polarized glasses, the UX430UA with the 7th generation Intel CPUs is a fine choice, especially since it comes with a matte finish unlikely to perpetuate glare from nearby light sources.
On the UX430UA equipped with the 8th generation Intel CPUs (ie. the Intel i5-8250u), the display no longer suffers from incompatibility with polarized glasses. However, we detected harsh PWM flicker with 100% flicker depth, at an aggravatingly low frequency of 200 hz. In other words, the display turns on and off rapidly 200 times each second. The only way to avoid flicker is to set brightness at 100%, which isn’t feasible for most users.
This flicker depth and frequency is likely to cause problems for even those mildly sensitive. Users may reduce the negative effects of this display by setting brightness to 100% and utilizing a screen dimming utility.