It can get a bit warm to the touch but otherwise no issues to report using the adapter. Unfortunately I don't have a 8K monitor to test, for reference I tested this on a Dell U3223QE connected to a M2 Mac mini that I use for a bit of office work and the occasional videos, no gaming.Comparing this adapter to Satechi's 4K version of this adapter which I also own, the main differences between the two are:- This 8K adapter can support a higher refresh rate at 4K (120Hz compared to 60Hz)- Physically the 8K adapter is larger by a bit, it's wider and thicker, the cable is braided instead of rubber and the cable is slightly longerFor my setup this adapter is simply overkill as my monitor is not capable of exploiting its full potential but for those with the hardware or looking to future proof themselves you can't go wrong with this adapter.