![]() From 3 floors up I heard nothing and that low speed fan exhausting the rear of case was about as audible as a gnat fart. ![]() ![]() Left two 3/8 copper lines sticking up and a thermostat wire running with the tubing down from the second floor to the basement providing the 12V for the coil of a contactor that applied 120V to run a 1/4hp pump. Instead I got a hair brained idea while I had to have concrete ripped up in my basement for other reason I grabbed a couple of the in floor hot water heating panels and put them in the dirt under the concrete. The quietest I’ve ever had was liquid cooled and had one 140mm low speed fan in the entire case. The best way to achieve quiet it put your PC in an unused room and get some long cables. I’m not going to bash TT, I’m just going to tell you that I’ve tried their products and not happy with the results. Just about every thread here that starts with what’s the best or what’s the coolest or what’s the quietest turns into a brand bashing fiesta. You can crank them up and they make plenty of noise but using a decent controller and water temp as your control variable they never go there. ![]() Now I have two rads that have 140mm fans that are quieter but still the same versions and a big a$$ MORA 420 with 200mm fans that run mostly near silent. While my fans will run to 3000 rpm’s where they aren’t very quiet at all they seldom go past about 1800 with a heavy load. The more heat dissipation you have as in number and efficiency of rads allows you to keep the liquid cool without the turbojet engines cranking to max thrust. When the load is low the temps are low and the liquid cooler. I can tell you I use the Noctua IPPC 3000 fans with aquacomputer speed control. I’m not going to call out every brand as I’ve not tried every brand. Not all are the same and lean towards higher values and PWM is important. What you want is first to look at static pressure. Unfortunately quiet and performance don’t really go hand in hand and the performance aspect is assumed because this is about liquid cooling. I’ve tried just about everything except the economy versions as I’ve never found anything cheap to work well. To get this back on topic and put of whining mode…. Not saying they’re the best but you won’t go wrong. That’s how quiet they are for the performance they offer. Why the long post? Well after I did those adjustments, I realized I probably wouldn’t of noticed the vibrations without the Noctua’s. I installed rubber washers on both sides where my pump is threaded into the case, removed the white plastic covers on my GSKILL ram, removed PCIE expansion slot covers, and even added folded up paper towel between the case/ pump to damped all vibrations. To notice all the other sounds from my system including pump. Once I had the Noctua’s dialled in, I started Quieter / smoother and better performance than my old SP120’s. I haven’t tried enough fans but I can attest to the Noctua’s. The type of sound is much smoother on the ears. But even describing hearing them doesn’t fully explain it. I have my desktop on the floor so ~2m away from ears. Not sure if the fans just needed time to break in, the old fan splitter adding resistance to the furtherest fan, or it was an old BIOS glitching PWM but now all three fans are locked in at same rpm and basically… silent. I was slightly disappointed after spending about $100 CAD on three fans there was this pulsing noise. Made the swap to A12x25s for my 360mm rad a year ago.
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