14x120mm external rad

[grandpatzer]

Well I want to run completely passive my system and wonder if it can be done with 3 external radiators, is there any problems?

I want to use Quick disconnecst on the 2 tubes going out of case so that I can easily move case without draining system.

Here is what I want to do:

Here is what I have currently:

 

[Diablo]

Even with that many radiators, you may struggle to keep the temperatures down. I guess if you had the radiators somewhere where there was a good amount of airflow you might get away with it. Personally, I would go for some really low RPM fans (800rpm) which will be virtually silent. I've heard (not used) that quick connects can severely hamper the flow rate, so it's up to you. When I had an external rad, I bought some ball valves (4 of them), and a male to male coupler for in between them. It let about 1ml of water out when I came to disassemble it for moving.

The only reason I say that passive will not work is that even at idle if I switch my fans off, the water in the CPU circuit with a dual 120 radiator will increase in temperature by about 10C in 2 minutes and will carry on rising.

 

[sheroo]

Have to agree, while all passive is the holy grail of all cooling, in practice you need some airflow otherwise no heat exchange will occur from the liquid to the air.

 

[Diablo]

If you don't mind external, there is nothing saying you have to keep the lines short. With the d5, you could probably have tubes out the back of the case, and bring the radiators into another room, or outside so the noise wouldn't bother you.

 

[Dolph123]

I have seen pictures of a rig cooled by a car radiator. Outside of the case, it could manage a pretty big overclock without any fans, but inside the case it began to get warmer. Maybe that's what you're looking for?

 

[Natashaful]

Even if you can keep the water at room temp, At temps very high the water will not cool the Cpu/Gpu's as the heat doesn't transfer 100% of the heat to the water molecules, You will hit a wall where the only difference made will be to use a chiller unit or Dry ice, Also you only need a 360x60mm Rad with GT14's for that i don't think you would even see an improvement with a 480x60 rad over a 360, You'll never get below room temp and 2C lower on the water doesn't mean 2C lower on CPU and GPU unless you have 100% heat transfer which is psychically impossible.

Example: room @ 19C

Water 20C, Cpu 250watts of power draw, Temp 60C

Water 20C, CPU 350Watts of power draw, Temp 80C

Water+chiller 5C, CPU 350Watts of power draw, Temp 72C

(Just an example not tested results, Although i'm sure someone has done this, I tested this years ago results where similar to example)

Diminishing Returns apply when stacking Rads over the amount of Heat wattage you want to remove.

Not as clear as i possible can make it, But i'm at work.

P.S no Fans on Rads doesn't work you hit a equilibrium after X time Rad's are designed to have airflow.

 

[airdeano]

id be easier (and cheaper) to use a second system than making one pump do the work through all of that maze.

a 240 x 40-60 rad push/pull for the CPU add the pump/res, 240 x 60 rad push/pull for graphics

plus with the twin graphic cards and over-clocking and more everything, the PSU may squeal a bit.

toms vid on the quad 7970 he touched on this issue.

airdeano