I don’t trust them which is why I’ve done what I could to reduce those temperatures.Don't trust those temperature specifications, i think perhaps they are under pressure from people like Nvidia because they have difficulty keeping these very fast memory IC's under 100c during normal operation, this especially during the mining boom when almost all GPU's vendors reduced their warranty from 3 years to 2 years.
Its not a question of the memory IC's burning out right away, but rather that the days of GPU's lasting 5 years +, even 10 years with daily use.... are long gone. Now they are expected to last 3 years.