Summary: Its a WD Blue drive, so I expected it to be a little noisy, but it is nearly dead silent. The fan in the case makes more noise in low speed mode than this drive does! Its pretty fast, mostly because of its 7200 rpm and 8 MB Cache. Its in a Lenovo desktop w/8Gig memory and 3.12Ghz Core 2 Duo processor so it can be pushed pretty hard while rendering videos or playing back HD video. It does not run as cool as the WD green drives I have.
Summary: I have purchased several used Western Digital HD's, both IDE and SATA, and haven't had a problem yet. Of course, I started purchasing them after one of my towers had the click of death and the WD HD was fried. However, I did replace the main drive with this one (though I only paid about 35 bucks with free shipping) but I'm using the used ones for several reasons.
Summary: I have an old dell poweredge server with a raid array, apparently these are the same drives used in the cases, way cheaper to order these than purchase through dell if your service agreement is expred!
Summary: OK, installed this in a business almost a year ago and it has not failed so guess it was a good purchase:) Update (26FEB13): Well, bought two and the first one lasted ten months and has died in month 11. Second one (backup) is now installed. Was unavailable so my friend paid almost $500 for a service tech to come out and install/setup the raid. Unfortunately have to use this exact drive for replacements. Hope this second one is more dependable.