So I bought a new WD, did a 1:1 backup with a Carbon Copy Cloner, put it in my 2010 MBP13. It runs faster, but is also noisier. With this I mean the operating noise, not clicks or anything like that. I'm 100% sure I fastened every screw tightly. And before anyone asks: Yes, I also moved the torx screws from the original drive to the WD. I thought it shouldn't be louder?