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Alphacool Repack Single 5.25" with pump how much noise

post #1 of 5
Thread Starter 
Hi All
has anyone else used one of these res pump combo's
It's way too noise for me ,just wondered if it should make that amount of noise .
i have a xspc duel bay and pump is my other rig and this small pump sound's way louder .
Was going too send it back rolleyes.gif

df7617e69b.jpg

57d07de15e.jpg
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post #2 of 5
I have it but have not installed it yet (waiting for few other parts like chassis).

According to the reviews this thing should be very quiet. Are you running it dry or have you tried running it dry ? Running it dry should ruin the pump as far as I understand so if you have done that then this might be the issue.

You running it at full 12V directly from PSU ? Not from motherboard fan socket ?
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post #3 of 5
Thread Starter 
Hi
No not running it dry .and yes its on full 12v from PSU.
i have a xspc 750lph res and its silent .this is like a light hammer drill .lol
i have had few problems so far .
it very very fussy about install of pump you can only just nip the screws on pump to res .
if you nip them like i would normally the pump won.t spin on mine .(bike Tech for 20 year so i now how not too tighten some thing ) wink.gif
i have had it running now for about 8 hours as i have it cooling GTX 480 that i fold with .
Flow was good but also found it was very hard to fill with enough water to stop it drawing more air back in as filler port is sunk down from top of main res roof.so there is always a air gap and it just keeps sucking in small amounts of air .
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post #4 of 5
Hm, sounds like I have reason to worry then as I have two of these with the same res waiting for new chassis to arrive (and to be modded) for my first water-cooling loop. Sounds like bleeding the loop empty of air bubbles will be a problem with this res.

One of the reviews did mention that this thing is "audible" at 12 V but still managed to list as "whisper silent" as one of the pros for the pump with only a raw performance as negative thing.

You could try to run it at lover volts if possible to see if this loud noise happens only at max rpm or its also loud at lower rpm levels in which case I would assume the pump to be faulty. The easiest possibility of doing that would be probably a fan resistor cable (used to drop the rpm of fans) if you have any lying around or if not then trying the motherboard fan connector and speedfan, if your motherboard supports fan control through voltage, not only pwm.
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CoolingCoolingCoolingOS
Nexxos 280mm radiator DC-LT Alphacool GPX 390M04 Windows 7 Pro 64 bit 
MonitorMonitorMonitorMonitor
DELL U2311H (x3) DELL U2312HM (x2) 9.7'' 2048x1536 (x3) IPAD3 retina Asus PB287Q 4K 
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CM Quickfire TK (red) Corsair AX-1200i Significantly modded Jupiter .. something alumi... Logitech G700s 
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64 GB Barracuda 3 TB WD Green 3 TB Crucial M4 256 GB 
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CM Quickfire TK (red) Corsair AX-1200i Modded Sharkoon VS-3 Logitech G700s 
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post #5 of 5
Thread Starter 
yes did not think bout lowering the volts as there only 350lph any way .
Have removed mine now and going to send it back and get xspc mini pump and res none bay type i think mad.gif
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