its not really loud at all. right now its under my desk with the exhaust facing away from me where the fan is. its a low volume noise. probably comparable to a stock intel heatsink with a fairly loud video card, except that they are much higher pitched. but it only runs when the water temp gets above its preset, so for much of the time it is actually turned off, depending how much heat you're putting in to the loop. running a loop of 3dmark11 it cannot keep the water at its preset temperature with a 3770k and 3 gtx 580s, its simply too much heat. but it stabilizes and usually holds the water a few degrees above ambient temp, as the ambient temp does still help with the cooling power. it is nice though. right now im running prime95 small fft's @ 5.0ghz, 4 cores 8 threads @ 1.46 volts, its been going for 2 hours, max temps are 48C, 53C, 52C, 50C with the water set to 10C on my de-lidded, lapped cpu. and it will kick on for 1-2 minutes every 4 minutes or so. i think it has a timer which will not allow it to cycle back on if it just turned off, a safety feature i presume to preserve compressor life... so it will heat up to about 55F before cooling back down to 50F with the cpu at 100% load...
if you get one, be aware that it holds approximately 3L of fluid. right now in my loop i have just over 4L, and that fills about 8ft of 1/2" ID tubing, 1 cpu block, 3 gpu blocks and a double 5.25" bay res of fluid. its a big tank and i have 2 pumps running 80% speed for a good flow, out the back, down to the chiller, through the tank and back up through the waterblocks.
You're almost there... Keep pushing it. 
I'm struggling to maintain 51x on my 3570k 
![(G{in}[AK)TION]](/forums/data/avatars/s/116/116613.jpg?1469679448){kind=avatar}
