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D5 pump questions

post #1 of 22
Thread Starter 
I have a Swiftech MCP655 pump with the molex 4 pin (2 pin) connection. Is it possible to a molex 4 pin to 3 pin converter on these?
post #2 of 22
You can do that but you need to connect that 3 pin to a port that supports 24W. Some fan controllers support that but definitely not on your motherboard.
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post #3 of 22
Quote:
Originally Posted by Mearaz View Post

You can do that but you need to connect that 3 pin to a port that supports 24W. Some fan controllers support that but definitely not on your motherboard.

Only if it is felt that 24V is required. From what I have read, 12 to 24V results in little gain and significant heat increase.

Connecting to motherboard has to be done carefully. You need to make sure the header supports the watts/amps the pump draws.
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post #4 of 22
He's (Mearaz) talking about 24W, not volts. The D5's at 12v pull around 22W from what I've seen.

But if the OP is talking about converting to a 3 pin fan connector, then yes, I had dual D5's running that way from a Lamptron FC9. I used a little heavier gauge wire than you normally use for fans.
post #5 of 22
Thread Starter 
I want to use a fan controller to connect them any suggestion on the converter and controllers?
post #6 of 22
Quote:
Originally Posted by mandrix View Post

He's (Mearaz) talking about 24W, not volts. The D5's at 12v pull around 22W from what I've seen.

But if the OP is talking about converting to a 3 pin fan connector, then yes, I had dual D5's running that way from a Lamptron FC9. I used a little heavier gauge wire than you normally use for fans.

Seen. My apologies.
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post #7 of 22
I have USB controlled D5's and have found that adjusting the speed is not really worth it. It actually made the pumps easier to hear because they would go from a nice quite low speed, through a loud intermediate speed, and eventually to quiet at full speed again. The pumps were only noticeable because they were changing speed all the time.
If you have a 655 I think its better to just use the dial to pick a nice quiet setting that gives enough flow and leave it alone. Adjusting pump speed doesn't give anywhere near the results of controlling fan speeds based on load anyway.
If that is what you want it for that is.
Edited by Jakusonfire - 3/15/13 at 10:41pm
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post #8 of 22
Quote:
Originally Posted by tru94533 View Post

I want to use a fan controller to connect them any suggestion on the converter and controllers?

Standard D5s do not really respond well to voltage control.
post #9 of 22
Quote:
Originally Posted by Capt Proton View Post

Quote:
Originally Posted by Mearaz View Post

You can do that but you need to connect that 3 pin to a port that supports 24W. Some fan controllers support that but definitely not on your motherboard.

Only if it is felt that 24V is required. From what I have read, 12 to 24V results in little gain and significant heat increase.

Connecting to motherboard has to be done carefully. You need to make sure the header supports the watts/amps the pump draws.

Never connect a pump to a mobo header.

The 12-24 jump on a normal D5 does very little but the D5 strong on the other hand becomes a beast pushing more pressure than a 35X

Quote:
Originally Posted by earthwormjim View Post

Quote:
Originally Posted by tru94533 View Post

I want to use a fan controller to connect them any suggestion on the converter and controllers?

Standard D5s do not really respond well to voltage control.

Not in my experience,I have had a 12v D5 on a Lamptron FC5 for nearly 2 years in my bench and for another year in another rig in the same setup.
No problems to report in either instance,RPM control is good with very little variation.
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post #10 of 22
http://koolance.com/ctr-spd1224-pump-or-fan-speed-controller
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