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D5 vs DDC

post #1 of 7
Thread Starter 
Is it my understanding that DDC pumps are noisier than D5's?

I ask because to date I've used neither and am getting ready to fire up my D5 system soon but am planning another build and those XSPC dual DDC tops are nothing short of awesome looking. BUT... I don't want better looks in exchange for a noisier pump.
    
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post #2 of 7
DDCs are definitely louder. However if you are going with two pumps you could grab two of the PWM DDCs. At 1300rpm they are inaudible if mounted properly. Quieter than a D5 Vario at speed 1.
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post #3 of 7
Thread Starter 
Quote:
Originally Posted by lowfat View Post

DDCs are definitely louder. However if you are going with two pumps you could grab two of the PWM DDCs. At 1300rpm they are inaudible if mounted properly. Quieter than a D5 Vario at speed 1.

Yes, was looking at dual using this pump top...

    
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post #4 of 7
Quote:
Originally Posted by lowfat View Post

DDCs are definitely louder. However if you are going with two pumps you could grab two of the PWM DDCs. At 1300rpm they are inaudible if mounted properly. Quieter than a D5 Vario at speed 1.

Now it is my understanding that regular DDC pumps are loud because they run full speed and aren't adjustable correct? (other than simply adjusting voltage)

I've also read that the PWM DDC version is indeed quieter at even full speed compared to the regular DDC pumps. Is that correct as well?

There seems to be a lot of opinions on the 2 that's why I ask. It would be nice to see a video comparison between an adjustable D5 and a pwm DDC at different rpms/flow.
   
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post #5 of 7
I do not think a PWM DDC is quieter than a regular DDC3.2 @ full speed. They are quieter than a DDC1-T by a significant amount but still loud.
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post #6 of 7
Take this with a pinch of salt, I've only used DDC and DCP(Jingway) pumps. To me they are relatively silent, but I have a hearing dissability so noise doesnt bother me as much as it does to people with good hearing. That being said, I can hear a faint "humm" from the pump once I put the system under load(I currently have the MCP35X PWM pump from swiftech). As I have not used a D5 I can not do a comparison of the two.
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post #7 of 7
I have a single MCP35X and the MCP35X2, both are very quiet. The most important thing is to keep the pump isolated from static (particularly metal) parts as possible, or you will get a lot of vibrational noises.
The MCP35X only creates a slight hum, only above 50pct (actually 100), and even then only audible with every single fan turned off completely.
The MCP35X2 can make some noise, but it's not the actual pumps but rather the water. They simply flow a ridiculous amount when running full speed.

Plus with PWM, the pump speed can be directly tied to component temp, and if you have PWM fans, they can be regulated directly alongside the pump. The result is a system as silent as you want when the need for significant cooling isn't there, and it will ramp up only as much as needed, alongside the much louder fans.


Also, if you want to get the most from your pump, I highly recommend against replacing the Swiftech 35X/X2 top, they outperform everything else and don't cost you anything extra.
   
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