No noticable noise from my SSD (64GB Crucial M225 - Indilinx Barefoot Controller), although I have not tested it up close.
Although a rather interesting point to add, a couple of months ago a water leak was reported in my immediate area, it turned out to be my next door neighbours house, under the kitchen floor, my PC's are in the room adjacent a floor up. when the leak was fixed my PC suddenly became much quieter, but of course it was not my PC at all. That was the point when I discovered a few things. 1) my PC is very very quiet indeed. 2) my Monitor is much louder than my PC, and the tone of the noise changes with brightness (as reported by everyone with this issue), 3) the noise that is currently coming from my PC sounded exactly like the noise that was actually a cause of a water leak, but at a much different noise level.
Thus I concluded that a water leak can sound just like a moderately quiet PC, and adding to that I thought I was having some form of Tinnitus or other related issue, as I could swear that I could still hear my PC when it was switched off, but it was there all of the time. I never noticed it as such before I turned my PC on, then of course 2 of the fans start up at insanely loud spin speeds of 1,200 and 1,000 rpm, and when windows loads speedfan, they drop to half that.
That was the point when I thought it was my PC, did the water leak noise "double" the percieved noise of my PC even though it was nearer 90% of it.? By that I mean that I thought the noise was my PC, and it was not, but I percieved it as a noise from my PC because it sounded the same, and yet I didnt notice the noise before I turned on the PC, and thought it was Tinnitus when I turned my PC off and could still hear it.
Additionally, it is worthe pointing out that my server now also appears to be much quieter (obviously still much louder than my PC), although I would say that the noise caused by the water leak + my PC, is about as loud as my server without the water leak.
Perhaps certain noise sources can trick us more than we realise, especially if we dont know that noise source even exists. Who would have thought that a water leak in my neighbours property could make noises in my house through the pipework to a small degree, and directly through a brick wall 20 feet from the source. People often identify random household electical devices as making noises they cant hear in the same room as the device, but can hear in other rooms, or at the very least dont find it annoying in the same way.
Sounds and how they affect different people in in different ways in different situations is a mind-boggling maze that is exceptionally difficult to get any meaningful answers to. Each person, noise, and situation seems to be different, I honestly feel sorry for anyone with tinnitus or similar conditions.
In the past I found that I was being kept awake by something mosquito like, it turned out to be a mobile phone charger that I could hear, in one ear more than the other, and only from one side of the charger itself, and only when it was NOT charging the phone, that was a simple problem to fix, pull the plug.
Main PC, P180, CM Silent Pro 500M, i5 3570k @ 4.2Ghz, 8-GB @ 2,000MHz, 256 GB Samsung 830, 500-GB 7K500, MSI 660Ti Twin Frozr, PC is super quiet :o
Server, 6-TB RAID-5 array, + 2 x 2-TB backup drives, 380W Enermax Pro82+, 4x very quiet fans, positive pressure only, no exhaust fans
Living Room PC, 3500+, 2-GB RAM, HD501LJ