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Two D5 Vario's or 35x's for dual loop? Help me decide! - Page 3

post #21 of 27
Quote:
Originally Posted by sivarthcaz View Post
Basically, I want to be able to control the speed manually. I want to have the ability to not have it run at full blast all the time. And from what I remember the PWM runs 70-100% if you connect it to the motherboard? Trying to think of where I read that. But anyways, like I said, I want to be able to control it manually.
You can do exactly that with Speedfan if you connect pump to cpu fan header, I can choose to run mine at any speed from 1300 rpm to 4500 rpm.
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post #22 of 27
Quote:
Originally Posted by mm67 View Post
MCP35X pumps get their power from a separate Molex connector, only speed signals come from fan header.
OK, sorry! I was thinking of the 450 strong not the 35X.
 
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post #23 of 27
Thread Starter 
Quote:
Originally Posted by mm67 View Post
You can do exactly that with Speedfan if you connect pump to cpu fan header, I can choose to run mine at any speed from 1300 rpm to 4500 rpm.
Would it control both if I used a splitter? Seems I can't find a splitter, might be searching for the wrong thing. If you could link me I'd appreciate it.
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post #24 of 27
Quote:
Originally Posted by sivarthcaz View Post
Would it control both if I used a splitter? Seems I can't find a splitter, might be searching for the wrong thing. If you could link me I'd appreciate it.
Yes, both will run at same speed when using a splitter like this : http://www.frozencpu.com/products/10..._AK-CB002.html . You even get one spare header for a third MCP35X
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post #25 of 27
Thread Starter 
Quote:
Originally Posted by mm67 View Post
Yes, both will run at same speed when using a splitter like this : http://www.frozencpu.com/products/10..._AK-CB002.html . You even get one spare header for a third MCP35X
Thanks. This is what i'll do given I get 35x's. Anyone have any reasons why I'd get two D5's instead of the 35x? I know they'd work, but it looks like it'd be a pain to change the speeds given the location of the switch on the D5 vario.
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post #26 of 27
35X's are the cheapest software controlled pump speed method (Just use your existing motherboard). A splitter like shown above that slimply splices the PWM wire should work.

The trick to PWM though is the motherboard software available for your motherboard. Manufacturers like Asus and Gigabyte provide good tools to adjust speed where other like my MSI are very poor leaving you to using third party software like speedfan.

You can either manually control or ramp up dependent on temperature and speedfan will work and other software like gigabyte easytune should work as well..

There are two wires that come into the 35X fan header, blue and green. Blue is the normal RPM sensor wire sending RPM signals back to the motherbaord, green is the PWM signal coming from the motherboard.

You basically just need a splitter or manually split the signal of the green wire out to two pumps.

How many times you can splice the PWM signal, I'm not sure. I've only done it with two items personally, the rheosmart and the 35X are currently sharing my MB CPU fan header and working fine. I imagine there is a limit on that PWM signal splicing, but what that number is...I'm not sure.
    
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post #27 of 27
Quote:
Originally Posted by Martinm210 View Post
35X's are the cheapest software controlled pump speed method (Just use your existing motherboard). A splitter like shown above that slimply splices the PWM wire should work.

The trick to PWM though is the motherboard software available for your motherboard. Manufacturers like Asus and Gigabyte provide good tools to adjust speed where other like my MSI are very poor leaving you to using third party software like speedfan.

You can either manually control or ramp up dependent on temperature and speedfan will work and other software like gigabyte easytune should work as well..

There are two wires that come into the 35X fan header, blue and green. Blue is the normal RPM sensor wire sending RPM signals back to the motherbaord, green is the PWM signal coming from the motherboard.

You basically just need a splitter or manually split the signal of the green wire out to two pumps.

How many times you can splice the PWM signal, I'm not sure. I've only done it with two items personally, the rheosmart and the 35X are currently sharing my MB CPU fan header and working fine. I imagine there is a limit on that PWM signal splicing, but what that number is...I'm not sure.
I have used 9 pwm fans connected to cpu header with splitters, that worked just fine. Right now I have 6 Akasa Vipers connected to cpu header on my secondary system.
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