I had a WD 4TB Black internal desktop drive (WD4003FZEX) that slowed down from an average write rate of 170MB/s to

I bought 3 of these December 2014 (I don't trust WD to store my data after 3 drive failures in a year) they are running in software RAID 5 on a Poweredge 2950

Like having a whole new machine!!!Returned the WD hard drive I ordered and installed because it was so loud

a new system build.i was real surprized on how quiet these drives are, and there are fast when you remember to remove the 150 gb limit jumper.normaly i use wd raptor hard drives but decided to try somthing