HBM ? 5700 have GDDR6 memory.
Quote from Martin - HWiNFO Author about GPU HBM temperature: 'I just clarified this with AMD and the situation is following.
This value on Navi GPUs is the memory temperature, but it's not the case temperature (T_case) that can be measured on the surface of the chip. It's the junction temperature (Tj) provided by the memory sensor.
Tj is always higher and the difference seen from Tcase can be up-to 18 C (according to measurements done by AMD). The maximum value of Tj here is 105 C.
So users that were concerned about seeing too high temperatures here should not worry about elevated values and not treats this as the surface temperature (which has a limit of 95 C).
I will adjust this value in the next build of HWiNFO so it provides correct description.'
I saw that site/link too when I did some searching about. So high temps are probably ok, but 90C+ still seems pretty high even if Tj Max is 105 C. However, there doesn't seem to be much I can do about it... Changing fan speeds, etc. doesn't lower the temp. It shoots up over 80C pretty much as soon as the miner starts. I guess the only thing would be to reduce mining intensity.
That being said, the miner ran all night (8 hours) without a hiccup or throttling. So as long as the temps aren't going to kill the mem long term, maybe they can handle it.
you can control GPU HBM temperature indirectly by passing very low -tt such as -tt 54 or -tt 53 and -fanmin 54 for an instance.