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Relative noise levels of pumps? - Page 2

post #11 of 17
I'm gonna try a new mcp655 tomorrow and let u know. I like dead silent (imagine pc being off)
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post #12 of 17
my DDC 3.2 is a loud sucker, but as the air bleeds its receding and when all fans kick in, its lost among the noise the fans generate. Its the loudest pump I have owned (in order of quietest to loudest):

OCZ Hydro 800 (Jingway)
XSPC X20-750
MCP355
post #13 of 17
I have a MCP655-b, MCP35X and an EK DCP-4.0. Out of those MCP655-b is the most quiet one, MCP35X is pretty quiet until rpm goes over 2000, after that it is more noisy than DCP-4.0.
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post #14 of 17
I own a 355 and a D5.
The D5 is so quiet I have to touch it to know its on. The 355 has a slight hum to it. Its loud enough that I can hear it over my rad fans at 7v.
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post #15 of 17
FYI, this exact question is my next testing priority. I think I found a sponsor and plan to see what I can measure for myself.

I subjectively think 90% of it all comes down to proper vibration isolation mounting methods, but I have heard many of these same rumors and would like to see what I can or can't measure.

Bad mounting can lead to horrendous noise, I know that much.
    
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post #16 of 17
my res makes really difficult to bleed air but I am seeing an improvement after a few hours of bleeding.
post #17 of 17
The D5 is naturally very quiet, if you mount a DDC right, you can get it just as quiet, but it does vibrate a lot, so a good absorbing mount is vital for silence.
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