I had the MX 4 before 60 days. The previous temperature was 39-40, now the temperature is 36 on the 7800X3d and in full load it is 82 with the MX4 it was 85-87. It's working fine, the issue is if it holds up over time. I will come back with an update

You may find it a bit difficult, as it is better to have thin coverage on the entire chip (CPU/GPU), but really, it's a different thing

First of all, it requires attention because it is electrically conductive.

Secondly, it is one of the best pastes, with the highest thermal conductivity.

On Asus R9 290X DC3OC, it reduces the temperature by 15 degrees with the stock cooler and without the stock paste. On GTX 980Ti with liquid cooling, the card runs at 25 degrees when idle (YouTube, Netflix, etc.) and the maximum temperature in games is 38 degrees. On AMD Ryzen 7950 with the stock IHS, it reduces the temperature by 5 degrees.