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Questions before beginning project

post #1 of 7
Thread Starter 
1. What is the benefit of having two radiators? (i.e. 2x560s or 2x480s)

2. For optimal performance, how close to they have to be to each other? (i.e. bottom mounted on opposite ends of the case)

3. This question pertains to a custom case: Utilizing the stack effect (as seen in Silverstone's FT02/RV02/TJ11) would having a top mounted rad AND 2 large fans (i.e. ap181) help in cooling, or would they just be frivolous?

Thanks in advance. typer.gif
Edited by ca.j.stokes - 5/12/11 at 5:02pm
post #2 of 7
1. More surface area of radiator, cools better and allows slower fans that make less noise. To note is that 120 mm fans offer more choices than 140 mm fans.

2. You can mount dual rads where you like. I have one on top and one hanging off the back.

3. I think you are asking about fan size and effectiveness on radiators. The fans above 140 mm, as a group, do not generate the pressure necessary to drive air through a radiator. So in my haf932 case the large 230 mm fans would be poor on rads. 120 & 140 mm are best fan offering for radiators.

Good luck. smile.gif
    
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post #3 of 7
For your first question this link help you have a better understanding for multiple radiators. I hope this helps.
post #4 of 7
Quote:
Originally Posted by ca.j.stokes;13483069 
1. What is the benefit of having two radiators? (i.e. 2x560s or 2x480s)

2. For optimal performance, how close to they have to be to each other? (i.e. bottom mounted on opposite ends of the case)

3. This question pertains to a custom case: Utilizing the stack effect (as seen in Silverstone's FT02/RV02/TJ11) would having a top mounted rad AND 2 large fans (i.e. ap181) help in cooling, or would they just be frivolous?

Thanks in advance. typer.gif

1. The more surface area the radiator has the better it will cool (same radiator series that is with the same fin density specs such as the gtx560 vs gtx 480). The more radiator surface area in the loop the more heat it will dissipate with the same rpm fans.

2. Doesn't matter how close they are to each other, just don't stack them on top of each other. The longer your loop the lower the flowrate, which increases temps, but the amount it will decrease by is much less than even .1C

3. you will want to make sure that the fans fit on the radiator. you do not want to sit a radiator on fans not built for it. sitting a rad on top of larger ones will eventually burn out either the fans attached to it or the ones it is sitting on.
 
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post #5 of 7
Thread Starter 
Quote:
Originally Posted by musicfan;13483169 
1. More surface area of radiator, cools better and allows slower fans that make less noise. To note is that 120 mm fans offer more choices than 140 mm fans.

2. You can mount dual rads where you like. I have one on top and one hanging off the back.

3. I think you are asking about fan size and effectiveness on radiators. The fans above 140 mm, as a group, do not generate the pressure necessary to drive air through a radiator. So in my haf932 case the large 230 mm fans would be poor on rads. 120 & 140 mm are best fan offering for radiators.

Good luck. smile.gif

For #3, I didn't articulate it properly (I'm currently in the process of doing it in SketchUp). Basically, take the TJ11 design

TJ11-Inside.jpg

and throw a massive 560 rad up top (hypothetically, of course). Would those 180s on the bottom still make a difference in cooling, or not? And if so, do you think it would be a dramatic enough improvement to keep them there?
post #6 of 7
Quote:
Originally Posted by ca.j.stokes;13483069 
1. What is the benefit of having two radiators? (i.e. 2x560s or 2x480s)

2. For optimal performance, how close to they have to be to each other? (i.e. bottom mounted on opposite ends of the case)

3. This question pertains to a custom case: Utilizing the stack effect (as seen in Silverstone's FT02/RV02/TJ11) would having a top mounted rad AND 2 large fans (i.e. ap181) help in cooling, or would they just be frivolous?

Thanks in advance. typer.gif

1.) More rad area allows better heat dispersal and thus lower temps to a point. More rad area also allows you to run quieter fans if you so choose. Generally more rad is a good thing to a point of course.

2.)You don't want to stack the rads if you dont have to. Generally you want to mount them where your case can pull the cooler air from (generally in-taking air from the outside of the case). Just dont stack them because the rads then lose their optimal cooling ability.

3.) Not sure exactly what you are asking.
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post #7 of 7
Quote:
Originally Posted by ca.j.stokes;13483288 
For #3, I didn't articulate it properly (I'm currently in the process of doing it in SketchUp). Basically, take the TJ11 design

TJ11-Inside.jpg

and throw a massive 560 rad up top (hypothetically, of course). Would those 180s on the bottom still make a difference in cooling, or not? And if so, do you think it would be a dramatic enough improvement to keep them there?

Most likely not much, but u want as much air flowing thru the system as possible. I'd put a 480 up top and a 480 down below.
 
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