The bundled double-sided thermal tape is a complete , since its thermal conductivity is very low, and it does not transfer the required amount of heat from the chips to the heatsink. As a result, the temperature almost did not change with him, well, maybe by 1-2 degrees.
I had to cut it off in those places where there is contact with the chips, and smear thermal paste instead, and I advise a good one, I applied it with a thermal conductivity of 8.1.
And only after that, the radiator began to…