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Intel Water Cooling Solution Kit Fan/Pump Power Feed Question ?

post #1 of 2
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Just got one of these. It's a very nice unit, well made, quality parts. The Pwm fan connects to a lead off the pump and a single 4 pin lead from the pump connects to the CPU header. Configured this way it seems as though both the fan and pump are being temp/speed controlled buy the CPU header.
My question is it seems odd for the pump to be 'speed controlled' I should think the pump should run at full speed like most other kits I've seen.
Does anyone know if this is indeed how the Intel Kit works ? or does the pump somehow draw constant power from the CPU header. I've searched on Intel, Asetec (the oem) and even Zalman who have a similar kit, but none explain how the pump draws power. Any insight appreciated.
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Intel Core i7 3930K Asus Sabertooth X79 NVIDIA GeForce GTS 450 Samsung  
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My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7 3930K Asus Sabertooth X79 NVIDIA GeForce GTS 450 Samsung  
Hard DriveOptical DriveOSMonitor
Intel 520 120gb SSD LG 24x Win XP Pro 64 / Win 7 Pro 64 Dell U2412M 
PowerCaseMouseMouse Pad
Corsair AX650 Lian LI PC9F Logitech G500 Razer Goliathus 
  hide details  
Reply
post #2 of 2
I'm not 100% familiar with that pump/kit but I would guess it is similar to the speed controlled D5 pump. The point is that obviously it makes less sound at lower speeds and when your computer is idle you don't need it on full blast.

It most likely works like PWM in that it speeds up when under load.
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