I had been looking for a new hard drive for my already come into the years iMac 17 "Intel iMac the first generation since the old man might just start reluctantly. The 500 GB drive WD seemed like a good solution, what price / Power concerned. The delivery was made by Amazon as always quickly and the packaging was, at least in my delivery, perfect, especially since the board was additionally packaged in the original manufacturer packaging. The replacement worked for an illustrated manual from the Internet without problems. Since then, the board performed almost silently out their duties in iMac. The WD Green drives automatically control the speed, which should have a positive effect on power consumption and volume, without having to accept losses in the speed department. Power consumption, although I have not measured it, but the other promises in terms of volume and speed, I can confirm. She's really very quiet. Also the system is running without slowing, so I can recommend this record a lot.