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Pump requirements for 3-way SLI

M

McManus

n00b
Joined
Jan 5, 2012
Messages
3
Howdy!

I'm considering buying 3 * evga GTX 580 classified ultra hydro copper 3072 video cards running in SLI to go with my Asus ROG Maximus IV (P67 B3) mobo. I currently have a dedicated loop for video cards being powered by a Swiftech MCP35X, going into a 4x120 radiator (with 6 fans in push/pull configuration: 3x2). My main concern is whether or not that one pump can drive all 3 in parallel or if I need to get a 2nd pump, and if so, how would I configure the loop?

An ancillary concern of mine is if anyone knows how to manually control the MCP35X's thermal sensor so that I can force it to run at full power if necessary? Something like a fan control knob would be great, although I know now that a fan control knob will not actually work.
 
The 35X is enough for pushing through that system.

The 35X does not have a thermal sensor. It has PWM control, which allows your motherboard to control the pump speed through a PWM signal. You will need to connect the PWM connector to a PWM fan header on your motherboard, and then configure your motherboard to adjust the pump speed based on GPU temperature. I believe you can do this through 3rd party software, or software included with your motherboard.
 
The pump is in a completely different housing and nowhere near the mobo, which is why I'm looking for some sort of external controller for it other than the PWM control on my motherboard.
 
Well, that's not going to really work if you want it to be temperature controlled by the GPUs, unless you get an expensive controller board like this.
 
I'm not too-too worried about cost. And while that card does seem like a decent backup alternative, honestly all I really need is some sort of controller knob: twist it all the way counter clockwise == off, twist it all the way clockwise == 100% power. Does such a thing exist? Might it exist as some sort of component of a more expensive multi-meter -like tool?
 
You're probably looking for this.

It creates a PWM signal, which you can adjust using the knob.
 
Well, just get a high amp/wattage manual fan controller. As long as it can handle the power draw of the pump - would be a simple knob, turn one way or the other for the control.
There should be some out there that work with PWM fans I would think.

** hehe, Tsumi beat me too it.
 
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