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Packing in your loop

Poll Results: Does that many rads help?

 
  • 72% (8)
    Hell yeah man, stack them up!
  • 27% (3)
    What are you thinking scheibe?
11 Total Votes  
post #1 of 22
Thread Starter 
Okay, so we've all seen water cooling loops in some top-end cases that have, say a double rad at the top and maybe a triple rad at the bottom for everything (CPU's, GPU's, etc.). Though, if I'm hypothetically going to spend upwards of five grand on that kind of a system I can't seem to get why they don't pack the rads in like there's no tomorrow. I mean, in most dream machine builds I've ever seen I think to myself, "wow I could easily fit another double rad there, and at least a quad there...." Ignoring the cost, since this is extreme enthusiast machinery, is there a reason for this? Could I drop temps to ridiculous levels or would I just be wasting my time? Thoughts?
post #2 of 22
The lowest temp you can reach with water is ambient. So, if it is 30c in the room you are in the lowest temps you can expect is 30c. But, you will have heat at the location of the heat source so expect it to be higher than ambient.

It comes down to flow rate and the specific blocks used really if you have plenty of rads.
My current build, that I have not started a build log on, has three rads in it mostly because I wanted to fill up my case. It also depends on the aesthetics that you want inside the case.

Edit:
I should also note that it is a very simple explanation.

Each rad can dissipate so many watts of heat depending on the amount of air flow over the rad. If a rad can dissipate 600w of heat at a specific fan and fan speed then you know you can dump upto around 600w of heat into the water before having overheating issues.
The more rads means you can dissipate more heat and you can use slower quieter fans as you have more area to get rid of the heat.
Edited by MNKyDeth - 5/15/13 at 8:40pm
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post #3 of 22
Stack em up! Nothing sadder than empty spaces where rads could go biggrin.gif
post #4 of 22
Radiators need cool air going into them and have warm air coming out of them. Packing in too many rads without thought to airflow can mean at best no improvement in water temps, or a tiny improvement in water temps at much higher cost, and at worst could mean higher temps because the extra rads restrict the overall air flow.
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post #5 of 22
Quote:
Originally Posted by Jakusonfire View Post

Radiators need cool air going into them and have warm air coming out of them. Packing in too many rads without thought to airflow can mean at best no improvement in water temps, or a tiny improvement in water temps at much higher cost, and at worst could mean higher temps because the extra rads restrict the overall air flow.

Yes exactly! I should have mentioned that. Make sure you plan out the direction of airflow you want going through each rad.
post #6 of 22
People don't fill a case with radiators for a few of reason:

1. Budget. Water parts are expensive.

2. Ease of assembly and maintenance. Filling a case to the point where nothing else can be added can make installing a pain as well as increase the time it takes to drain and refill a loop.

3. Noise. At some point having too many radiators will be so loud it will be annoying to sit next to.

I have a single RX360 with three Top Motor 120mm fans in my case and it's about as loud as I'd like it to be at about 50% fan speed.

EDIT: As to the comment about airflow, I don't agree that it would be a problem since water cooling requires some planning to get a loop to run efficiently in the first place. A few extra minutes directing fans wouldn't deter me from adding more radiators.
Edited by Trogdor - 5/15/13 at 8:56pm
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post #7 of 22
Thread Starter 
Alright, so what if all of the rads installed were exhaust; as long as the heat is not being recycled back into the system it would be good to go correct?
post #8 of 22
Sucking air into the case through the cracks and crevices will create dust buildup at the entry points. In my scenario I plan on having bottom and front pull air into the case. I will also have the rear fan pull air into the case. Then everything will exhaust the top.

This should give me positive pressure within the case while sucking fresh air in two of the rads and semi warm in one. Overall with proper air flow the temps and dust within the case should not be very high compared to ambient if enough air is moving through the case.
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post #9 of 22
Quote:
Originally Posted by slimscheibe View Post

Alright, so what if all of the rads installed were exhaust; as long as the heat is not being recycled back into the system it would be good to go correct?

You're going to have your intake fans running at super speed to keep positive case pressure.
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post #10 of 22
Quote:
Originally Posted by slimscheibe View Post

Alright, so what if all of the rads installed were exhaust; as long as the heat is not being recycled back into the system it would be good to go correct?
Then you will create a vacuum ... and the fans won't be able to breathe thus ... DISASTER.
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