Looks like the 7K model match the specs of the FAN-0126L4, at much lower power consumption and thus at lower noise? I've swapped a lot of fans, and I can tell you right now that if the fan size (e.g., 40mm, 80mm, etc.), the fan thickness (e.g., 10mm, 20mm, 30mm), an...
74L4 - direct drop in replacement. Noise level is not too bad. I use a script that adjusts fan levels based on Hdd temps and I target around 35deg idle Temps. Fan runs at 2800rpm most of the time. 104L4. - I just let it run at full speed. It is completely inaudible. The ...