Anyone using WD80EFZX HDD as usual desktop drive? Seems nice but the noise from youtube videos I watched seems worrying. Some like those old delta fan with the fan edge hitting cables.

Depends on how often and how fast you want to use the file (watching movie, network fileshare for music or video files, game file) if just to park your video files, seldom use documents or pictures then cctv is good enough since the cctv speed is 5400 rpm while barracuda one is 7200rpm.

Hows the noise during read/write? I read that and watch some youtube videos of the Ironwolf nas going jet plane since its a NAS/datacenter hardware compared to green/blue/barracuda series which would be in desktop.