Help with watercooling setup

Nefrums

Honorable
Jul 8, 2013
3
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10,510
I'm new to water cooling. but I'm going to build silence optimized system, and would like some input if this could work.

I'm planing to have a i7 4770 and a GTX 780 water cooled.

Will it be enough to have a 280mm radiator with 2x 140mm 800 rpm (60m3/h) fans?


I like the low rpm fans (Noiseblocker NB-Blacksilent XK1) because they are only 12 db according to the spec.

Assuming that the fans actually manage to push all that air through the radiator, and that the cpu and gpu generate 330W. that would mean a +8 degrees in the output air. That do not sound like allot, but i have no idea on what that means for the temperature of the radiator etc.

I was thinking of mounting the radiator with the two fans blowing out of the case and have another three fans as intake. Hence having positive pressure.
 
Solution
When it comes to water-cooling and silence, go overkill on your radiator space. The more rad space, the more fans, the slower they can go and still achieve the same cooling.
I have a i5 and 7970 under water (similar heat load to you) with two 360mm radiators cooling it. My fans (cheap $6 things, though are fairly good) I can turn down to ~800RPM with no impact to temperatures and they are dead quiet.

Besides, you need more rad space then 280mm to handle that kind of load. I would say a thick 360mm at the very least (with good performance fans), ideally 360+240mm. With only 280mm of space and under load, your delta's (difference between Ambient and water temp) will suffer quite badly as it cant get rid of the heat that's being put in...
When it comes to water-cooling and silence, go overkill on your radiator space. The more rad space, the more fans, the slower they can go and still achieve the same cooling.
I have a i5 and 7970 under water (similar heat load to you) with two 360mm radiators cooling it. My fans (cheap $6 things, though are fairly good) I can turn down to ~800RPM with no impact to temperatures and they are dead quiet.

Besides, you need more rad space then 280mm to handle that kind of load. I would say a thick 360mm at the very least (with good performance fans), ideally 360+240mm. With only 280mm of space and under load, your delta's (difference between Ambient and water temp) will suffer quite badly as it cant get rid of the heat that's being put in the loop, especially not with 800RPM fans.

I suggest you have a read through the water-cooling sticky.
http://www.tomshardware.com/forum/277130-29-read-first-watercooling-sticky
 
Solution