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post #1 of 15 (permalink) Old 02-08-2019, 11:43 AM - Thread Starter
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Radiator Setup Question

Hey guys, I have an Evolv X and plan to put a 420 on front and a 280 on top, and both as intake. (The usual setup would be to setup the fans on the 420 as intake and exhaust on the 280 on top. But tests have been done here by user named boli that setting both as intake will decrease water temp by at least 5c.)

Now, I have an extra 140mm rad that I can put on the back, but I'm wondering if it's going to be of any help? Since it will act as the only exhaust, it will exhaust all the hot air from the intake rads making it maybe even counterproductive? Not to mention it will exhaust less air due the rad's added air resistance

What do you think? Should I use the extra rad or not?
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post #2 of 15 (permalink) Old 02-08-2019, 11:49 AM
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subbing as i have a very similar setup
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post #3 of 15 (permalink) Old 02-08-2019, 11:52 AM
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Likely not worth the extra tube routing complexity.

I had something (remotely) similar, Fractal Design Arc XL with 240 in the front, 360 up top, 120 in the back. First tried 140 in the back, that spot fits a 140 mm fan, but a 140 mm rad would not fit, so switched to a 120 mm rad and fan. It looked cluttered, and the extra rad got in the way, and airflow wasn't great either.

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post #4 of 15 (permalink) Old 02-08-2019, 12:07 PM - Thread Starter
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Quote: Originally Posted by cmpxchg8b View Post
Likely not worth the extra tube routing complexity.

I had something (remotely) similar, Fractal Design Arc XL with 240 in the front, 360 up top, 120 in the back. First tried 140 in the back, that spot fits a 140 mm fan, but a 140 mm rad would not fit, so switched to a 120 mm rad and fan. It looked cluttered, and the extra rad got in the way, and airflow wasn't great either.
Have you tried removing the 120 rad? Any difference in the temps? Yeah I also factored in the routing complexity and thought of a workaround for it.

The setup would be:
Res > top rad (orientation should be reversed, ports should be near the front, not back) > front rad > cpu > back rad > gpu > res

Still may look cluttered but not as much.

EDIT: On second thought, no probably it might even look worse. But yeah anyway, would not want to leave this rad unused if possible

Last edited by jelome1989; 02-08-2019 at 12:13 PM.
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post #5 of 15 (permalink) Old 02-08-2019, 12:13 PM
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mine looks fine. I have it going:

res> pump> GPU> GPU> CPU> Back 120 Rad> Top X-flow 240 Rad> Front Rad> Res
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post #6 of 15 (permalink) Old 02-08-2019, 12:30 PM - Thread Starter
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Quote: Originally Posted by OneFunGenesis View Post
mine looks fine. I have it going:

res> pump> GPU> GPU> CPU> Back 120 Rad> Top X-flow 240 Rad> Front Rad> Res
How about airflow orientation? What do you think should I use the back rad or not?
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post #7 of 15 (permalink) Old 02-08-2019, 12:37 PM
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Quote: Originally Posted by jelome1989 View Post
Have you tried removing the 120 rad? Any difference in the temps?
I wasn't happy with the temps at all. It's a quad-GPU config, so it was way too low on rad space. Thus I did a full rebuild in a bigger case, and went straight for 4 x 480 mm rad setup.

So no, I haven't tested with just that one 120 mm rad removed...

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post #8 of 15 (permalink) Old 02-08-2019, 01:09 PM
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Quote: Originally Posted by jelome1989 View Post
How about airflow orientation? What do you think should I use the back rad or not?
Both of these questions are what I am struggling with as well....
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post #9 of 15 (permalink) Old 02-08-2019, 01:23 PM
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Hi,
Little 140mm won't hurt but won't do much of anything.
Rads as intake work bottom line top/ front nothing on the back air will find it's way out naturally 140mm rad might upset that as far as how fast air goes out
One or two fewer fan speeds to deal with too without the 140mm.

I have no fans on the rear just intakes on rads push/ pull.

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post #10 of 15 (permalink) Old 02-09-2019, 09:59 AM
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Quote: Originally Posted by jelome1989 View Post
Hey guys, I have an Evolv X and plan to put a 420 on front and a 280 on top, and both as intake. (The usual setup would be to setup the fans on the 420 as intake and exhaust on the 280 on top. But tests have been done here by user named boli that setting both as intake will decrease water temp by at least 5c.)

Now, I have an extra 140mm rad that I can put on the back, but I'm wondering if it's going to be of any help? Since it will act as the only exhaust, it will exhaust all the hot air from the intake rads making it maybe even counterproductive? Not to mention it will exhaust less air due the rad's added air resistance

What do you think? Should I use the extra rad or not?

absolutely not. it will cause the water temp to increase.
now for some hard questions, how fast are the fans you have attached to the radiators?
are they setup as all intake?
do you have a exhaust fan or fans?

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Last edited by toolmaker03; 02-09-2019 at 04:31 PM.
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