Tom's Hardware Guide published a review on Passive Cooling: XFX RX 460 Heatsink Edition Vs. Palit GTX 1050 Ti KalmX A quote from the article:

After hacking together our own passively-cooled card, we now compare off-the-shelf solutions based on AMD and Nvidia GPUs. Was our attempt amateurish or could there be a more general problem with passively cooling current-gen graphics processors?

 Passive Cooling: XFX RX 460 Heatsink Edition Vs. Palit GTX 1050 Ti KalmX @ Toms Hardware