from your username you are the same individual who bought an S5 off ebay from me and cancelled after the auction ended prompting me to have to repost the item (luckily I got a higher price...so no worries).
You flooded my ebay message box with all sorts of questions pertaining to the S5 and even stating "you would not pay unless these questions were answered" ..... where upon I answered them and yet you continued to repeat the same questions. After 3 days of this I ignored your ebay messages and than you cancelled your order. I am assuming you bought from somewhere else since you said you bought an S5 and now resold because of the noise.
I am reading this thread and you are asking the same questions without doing ANY research at all hoping for someone to do the work for you. It has been stated many times over how loud the S5 is if you scroll through posts or google.
I would advise other members to stop answering his questions because you are just enabling him to find nothing himself.
If true that would be a pretty crappy thing to do. Always do research before buying, and ROI math.
That is one bad thing about ebay is some miners I sold I did "free" tech support I did not plan on. One or two I tought new miners how to mine... its kinda a pain but normally I got better prices off ebay compared to board here. So it's kinda part of the expected things is everyone in a while someone buys a miner and does not know about mining.
Never had one tell me they had question before they would pay. That is a new one.