The cryorig h7 won't interfere with ram whether it's low profile or has extremely tall heatsinks. It's built using offset heat pipes which means they're bent to one side so the cooling fins and fan are situated away from the ram slots. That's why it's advertised as 0 interference.
The green box shows the gap between the nearest ram slot and the cooler fan, the red lines show the angle of the heat pipes which move the tower of cooling fins away from the ram slots.