When I ran it the vram temps were actually fine (although not the scorching GDDR6X variety of course). Since it's not sharing thermal mass with the GPU die, the

When I ran it the vram temps were actually fine (although not the scorching GDDR6X variety of course). Since it's not sharing thermal mass with the GPU die, the direct airflow on its own was plenty. You actually can see this with the 3090 in fact. Simply pointing a fan at the back of the card does wonders and easily keeps them in spec without a heatsink at all, although the backplate is acting as a bit of a spreader. Which makes sense since each memory chip is only like 2-3W. You don't need a heatsink for that, just a little bit of airflow