it is normal for memory to be hotter compared to the die, even the latest rtx cards memory can reach 90 and even 105, especially gddr6x. if you think it's hotter than your usual temp, maybe change the paste and pads.
🤔 So this explains why gddr6x cards do 90°C on vram when mining? God damn and you say this is safe? On my Vega is 83°C is achieved the system would shut down instantly but is there any proof that this is safe ?