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What pump for silent water cooling? Will a single pump be enough?

post #1 of 13
Thread Starter 
I was thinking of buying a Swiftech Maelstrom Res with a single MCP35X pump. I want to know if this is a silent pump or are there others people would recommend for a Silent PC in a Fractal case.

I am trying to cool 2 GPUs, 1 CPU, 1x280mm rad, 1x240mm rad, 1x120 mm rad, 1x140 mm rad. Is a single pump enough?
post #2 of 13
I'm fairly new to WC, and I have that pump (sort of). It's pretty much silent at 35% RPM. I have it with two GPUs, one CPU, and two dual rads.
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post #3 of 13
Quote:
Originally Posted by brian1115 View Post

I was thinking of buying a Swiftech Maelstrom Res with a single MCP35X pump. I want to know if this is a silent pump or are there others people would recommend for a Silent PC in a Fractal case.

I am trying to cool 2 GPUs, 1 CPU, 1x280mm rad, 1x240mm rad, 1x120 mm rad, 1x140 mm rad. Is a single pump enough?

Yes that can be a very quiet pump depending on your setup. It is PWM controlled. I have it plugged into my cpu fan header on my mobo. The Rampage IV Extreme has a nice bios which allows you to set the speed of the pump. Right now I have it set to 30% at all times and it is very silent. In my bios I can actually set it to increase the pump speed once the cpu load increases and I can set a range so it changes depending on load. It depends on the settings of your mobo bios but i would say a PWM pump can be silent. I don't even have mine mounted or padded. I am also using 2 and I barely hear them at 30%.
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post #4 of 13
Quote:
Originally Posted by brian1115 View Post

I was thinking of buying a Swiftech Maelstrom Res with a single MCP35X pump. I want to know if this is a silent pump or are there others people would recommend for a Silent PC in a Fractal case.

I am trying to cool 2 GPUs, 1 CPU, 1x280mm rad, 1x240mm rad, 1x120 mm rad, 1x140 mm rad. Is a single pump enough?

That is a lot of rads but this pump is very powerful and I am no expert but you should be ok with one pump. The only problem is you might have to set it to a high speed which will increase the sound. Maybe 2 will be better so you can set it to a lower speed. I bought a top which connected my 2 pumps and made them look nice. I am running 2 mcp35x pumps right now.
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post #5 of 13
Thread Starter 
Thanks for the responses guys smile.gif
Quote:
That is a lot of rads but this pump is very powerful and I am no expert but you should be ok with one pump. The only problem is you might have to set it to a high speed which will increase the sound. Maybe 2 will be better so you can set it to a lower speed. I bought a top which connected my 2 pumps and made them look nice. I am running 2 mcp35x pumps right now.

From what I have read people normally turn it down to decrease the noise, so having two like you suggested and undervolting them could be the answer. I can't buy a top because it will be combined into the reservoir.
post #6 of 13
While I can't vouch for the mcp35x, I can vouch for the d5 varios. I used to use an alphacool VPP655 (D5 vario) on my build with 2 360mm rads, 1 480mm, 2 gpus and cpu with no problem. Furthermore it's a whisper quiet pump, and I ran it at full speed at all times without ever hearing it. So it also is definitely a good contender. I know the head pressure (I believe at least) is a bit weaker, but by no means will it not be enough for your setup if it was more than adequate in mine.
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post #7 of 13
It all depends on the restriction of your radiators, if they are thin (like 30mm thick) then they will be more restrictive than thicker rads.
With that number of components and radiators I would feel comfortable with one pump if they were all thick rads, if they are thin rads then I would be very worried one if one pump would provide a decent flow rate.
As an example in one of my builds I used three thin rads, a CPU and GPU blocks and with one D5 the flow rate was down to 3LPM at full pump speed.
With a bit of research you should be able to add up how much restriction you will have with all those parts and see what your flow will be like with one pump, at the very least I'm sure it would need to be running full power. There is no easy yes or no answer because there is so much variability in components.
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post #8 of 13
If you want the quietest pump on the market right now, you should look into the newer MCP655 PWM Pump. Click HERE.

Look at some test results by a popular reviewer on the forum at his website, MartinsLiquidLab. Click HERE.

Edit: Two of these bad boys in your rig and you will have the sickest Pump setup out there!
Edited by tylergbass - 1/31/13 at 11:48am
post #9 of 13
Many of the Laing pumps can be silent with a fan controller to regulate the power. The Laing D5 (aka Vario or MCP655) is a good choice too. However, you have a good deal of WCing components that could up the flow restrictions. So, two D5 or a MCP35x (speed controlled) would work for you.
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post #10 of 13
That is a few rads and blocks. I have had several Koolance PMP-450s (laing d5t pumps) hooked up to the koolance ctr-spd24x2 running at probably 16-18v and the pumps are no louder than the 8 AP-15s at full speed on the radiators within the case.
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