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Liquid nOOb

post #1 of 8
Thread Starter 
My latest build is the first time I've installed or had a liquid cooling system, so I decided to start with something pretty straight forward and not too complex. The Swiftech H20-x20 Edge HD seemed to be the best 'middle of the road' solution to get started so I went with that.
I've been trying to find the sweet spot as far as the fan levels on the rad and the pump speed so as to keep it as quiet as possible, but have noticed a slight 'ticking' sound coming from the pump on the rad when it's spinning at slower than about 50%.
Under load and OCd, everything goes to 100% and I can no longer hear the noise, but then again it might just be masked by the fan noise.
Also, when it runs at 100%, I can hear the liquid gurgling through the rad though I have no air in the loop.
It's a simple setup with only a CPU block atm.

My question is concerning fan speed for the CPU which is what I have the pump attached to.
Should I run the pump at a higher speed and the fans a little lower? Leave everything on Standard or Silent? Or set up custom parameters in Duty Mode? Temps are fine with Idle around 28°C and full load with 5.0Ghz peaking at around 79°C.
It's obviously working, but I'm not sure if the ticking sound is normal when running the pump at low speeds or if i might have a problem.
It's not terribly loud, but when I have everything backed off to the point that the room is quiet, my OCD fixates on the ticking.
I thought about getting a better fan controller and not using the BIOS controls, but I have no open bays left in my case. I also looked at Speedfan, but was a bit confused with the interface.
post #2 of 8
Water flow won't make to much difference once you have a speed that prevents laminar flow across the block (most blocks sweet zone is 1 gpm) and being a closed loop set up all things being equal the only delta that can reduce heat in the system is the air flow going across the rad.

However I'm confused what you bought is an all in 1 system (prefilled?) if so you shouldn't hear the sounds of water "gurgling" if you are you have 2 things happening. 1 Air in the system or 2 Cavitation near the pump at lower speeds (this one doesn't make to much sense but could give you that gurgling sound) Not sure how you can bleed the system on an all in 1 set up like that hopefully someone else can talk on that.
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post #3 of 8
If i remember the edge set comes with a mcp35x attached to the radiator, that is plenty overkill running it at 100% for a cpu only loop. Like what Border said run your pump at a lower speed and have a flow of 1gpm but even if you go lower there shouldn't be a huge water temp diff if you have lower flow, maybe a couple degrees. Run your pump at a lower speed to let the air bubbles bleed instead of running it at high speeds so the pump sucks the air back into your rad (the gurgling noise in your rad) If you can have your fillport open but since everythings on your rad attatch a tube and let it run outside so if anything comes gushing out it won't land on your mobo.

Faster fans > faster pump.
post #4 of 8
Thread Starter 
Quote:
Originally Posted by Border201 View Post

Water flow won't make to much difference once you have a speed that prevents laminar flow across the block (most blocks sweet zone is 1 gpm) and being a closed loop set up all things being equal the only delta that can reduce heat in the system is the air flow going across the rad.
However I'm confused what you bought is an all in 1 system (prefilled?) if so you shouldn't hear the sounds of water "gurgling" if you are you have 2 things happening. 1 Air in the system or 2 Cavitation near the pump at lower speeds (this one doesn't make to much sense but could give you that gurgling sound) Not sure how you can bleed the system on an all in 1 set up like that hopefully someone else can talk on that.

Actually, it isn't a closed a loop like the Corsair units, but not as sweet as many of the setups I've seen here.
I did have to assemble and fill it myself, but took alot of time making sure I saw no air pockets or bubbles.
During filling, I had a few but worked them out. It used all of the liquid that came with it (they said the included bottle would fill it properly).

By cavitation, do you mean an air pocket by the pump that I'm unable to see but that doesn't travel through the loop?
post #5 of 8
Thread Starter 
Quote:
Originally Posted by kazenagi View Post

If i remember the edge set comes with a mcp35x attached to the radiator, that is plenty overkill running it at 100% for a cpu only loop. Like what Border said run your pump at a lower speed and have a flow of 1gpm but even if you go lower there shouldn't be a huge water temp diff if you have lower flow, maybe a couple degrees. Run your pump at a lower speed to let the air bubbles bleed instead of running it at high speeds so the pump sucks the air back into your rad (the gurgling noise in your rad) If you can have your fillport open but since everythings on your rad attatch a tube and let it run outside so if anything comes gushing out it won't land on your mobo.
Faster fans > faster pump.

Thanks for the tips!
How can I determine gpm? Does this require adding something to my system or is it too basic/entry level for expansion?
post #6 of 8
Cavitation is when a liquid comes under such low pressure as to form a temporary "bubble" however this bubble isn't air filled but instead is straight vacuum. Because nature hates this with a burning passion Cavitation will cause all sorts of issues on materials. But as you said that you had to fill it yourself I'd say you simply have an air bubble in the line. angle the rad left and right then forwards and backwards to help coax it out. If after several rounds of that you still hear the sound then it could be the fluid they sent you wasn't enough. You can either buy more from them or, and someone back me up on this, add distilled water till the unit is completely full (can't add anymore at the fill port).
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post #7 of 8
Quote:
Originally Posted by Border201 View Post

Cavitation is when a liquid comes under such low pressure as to form a temporary "bubble" however this bubble isn't air filled but instead is straight vacuum. Because nature hates this with a burning passion Cavitation will cause all sorts of issues on materials. But as you said that you had to fill it yourself I'd say you simply have an air bubble in the line. angle the rad left and right then forwards and backwards to help coax it out. If after several rounds of that you still hear the sound then it could be the fluid they sent you wasn't enough. You can either buy more from them or, and someone back me up on this, add distilled water till the unit is completely full (can't add anymore at the fill port).

The bubble is not a vacuum; it's water vapor.
    
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post #8 of 8
Bah you and wiki win this round!
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