For my 3070 Tis i have a stable temp of 85° keeping power limit under 200 and i read on the web, that for GDDR6 gpus, this temperature is perfect.
Indeed, for these gpus, the power throtling begins from a temperature of 110° i remember.
So it seems that the vram issues of the 3070Ti, are more a false belief.
The last time my RTX 3070 Ti shows 85°C was when I bought it as new, after two months of mining the GPU start going over 100°C this sacred me and I stopped using it for mining until I changed the thermal pads completely, the brand is one of the worst 3070ti out there, MSI, the EVGA brand are even better.