Addendum; you can actually shift the fan upwards on the heatsink, it is only fastened by clips to the heatsink fins. As long as you have space in the case above the cpu cooler just shift it by some millimeters to give clearance to the ram. Or clip it to the reverse side to pull air through the heatsink if you only had the one fan it came with. The technician really should have tried this instead of just saying it can’t be done.
