Multi Loop Single Cooling

[ICONchad]

I'm planning out a 8k video playback/rendering setup that will have 2 CPU and 4 GPU (with space to go to 8). I'm looking to water cool the CPU and GPU.

In terms of loops I'm thinking

1 - both CPU with their own reservoir and radiators

2 - Two GPU with their own reservoir and radiators

3 - Two GPU with their own reservoir and radiators

 

Is there a advantage or disadvantage to run the return hot line of the components to a single reservoir and then thru multiple radiators to cool it and then to a single reservoir that forks into each loop? or should I keep each loop separate and not connected to each other?

 

Thanks

 

Chad

[Sreno1]

I don't think you need 4 reservoirs, maybe 1 or 2? As long as the loop(s) have enough radiators I think it should be fine.

[pwn_intended]

Only run 2 loops. One for the GPU's and one for the CPU's. A single loop would work too but you pump may struggle with 6 total waterblocks) And only run a single reservoir per loop. As long as you have enough rad space (I'd say a bare minimum of 1 x 120 mm per component, more if you plan to overclock.) the number of reservoirs and loops doesn't matter much for cooling capacity as long as your pump can keep the liquid moving.

[ICONchad]

I'm not thinking one continuous loop where it would run thru the gpu and cpu in a series but individual loops for the gpu sets(since there may be up to 8 gpu total) and then one loop for the cpu set. I'll make a quick diagram. 

 

It will also be an externally cooled unit so I'm not too concerned about space considerations. 

[ICONchad]

Here is what I have in mind, it doesn't include drain ports and things like that, just brainstorming. Any input would be appreciated

[frostburg]

Just for clarity, you're doing this because you envision a scenario in which you only use a subset of those GPUs and want to have the full cooling surface available for each one?

[ICONchad]

They will be running all out for 8k playback and rendering

[stealth80]

As long as you have the space in the case it will work. Just consider the maintenance such a system would require. draining, flushing and cleaning 3 loops will obviously take a lot longer than one. I just switched to one loop from 2, although that was because I downsized my case and dropped SLI 970's for a 1080