New liquid cooling unit install help?

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Jul 21, 2013
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I had to buy a new cooling system and decided to go with a liquid cooler. I'm all the way to plugging the components into the motherboard, which is is a Biostar A780l3g, but I have two questions. 1. The previous heat sink was plugged into a CVG5 (4 prong) port and the pump for this system has a 3 prong connector. Do I plug it into the port mentioned above or should I plug it into the sys fan port which has 3 prongs. My second question is more of a problem. I bought this system used and while reading the manual, I found that I'm supposed to have a y-cable for the two fans that go on both sides of the radiator. I don't have this y-cable. However, my other fans are capped and get power directly from the power supply. Can I do this with these two fans well? There's an open power source from the power supply. If you need any pictures at all, I can post them. Please help me figure this out before the end of the night!
 
Solution
You can plug the pump into the 4 pin connector on the board it will just fit over 3 only(it is made to only fit in the right place). It is a good idea to make sure that fan speed control for the cpu header is off once you plug in the pump as some boards will still control 3 pin fans on 4 pin headers(use voltage).

You can connect the fans to the power supply, but it may be loud(a small fan controller may be an option to set a fixed speed that is not too loud and still cools well.).
You can plug the pump into the 4 pin connector on the board it will just fit over 3 only(it is made to only fit in the right place). It is a good idea to make sure that fan speed control for the cpu header is off once you plug in the pump as some boards will still control 3 pin fans on 4 pin headers(use voltage).

You can connect the fans to the power supply, but it may be loud(a small fan controller may be an option to set a fixed speed that is not too loud and still cools well.).
 
Solution


Hey thanks for the reply! I don't really care if it's loud for a few days or so, until I can apply a proper fix (I pretty much always wear headphones if there's audio) can you please show me a guide or something on how to get these fans power? I can post picture showing how the other fans are connected because it's hard to describe.
 
The fans connect to the power supply with something like and LP4 to fan connector.

Most times they look something like this. So they get power from the old style hard drive power connectors.
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They also have them like this. These allow you to run upto 4 fans without extra adapters 2 of them would be at 5 volts while 2 would be at 12 volts
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Please note that the plastic has to be cut to use 4 pin fans on these adapters.
 


The bottom picture can accommodate 4 pin fan connections?
 


Okay cool, where can I find these? And maybe you can help with this too. I moved my radiator just a little bit while my computer was unplugged and electricity drained from the motherboard. Now, the pump makes a horrible noise like a fan hitting some wire or something. Is it low on coolant? I didn't kink and tunes or loose liquid. Also, my computer shuts off after about 25 seconds because of this. What is this?
 
I have never seen the computer shut down, but if the system is moved the radiator may start out loud as is gets liquid flowing again and pushes air to the highest point.

Your rad should have at least part of it OVER the top height of the pump(I say this as someone with the rad at the bottom of the case, but I know Asetek recommends it be higher than the pump with the hoses coming out the bottom of the rad).

I personally find Asetek pumps can be loud(I am trying one on 9 volts to try to quiet it down, but time will tell if it can still work well at that voltage).

They also recommend giving the pump or rad a bit of a shake(try it with the system off and see if it helps).

As for the adapters, They should have them or something similar at most stores that sell computers or computer accessories.