Custom Dual(?) Loop - Layout

[Cyong]

Parts to cool: i7-5960X and 3x GTX 980s

 

Ok, so I have been fighting with myself over this for a week or so now, I have done a fair bit of work with custom water cooled system loops before. However I need a sounding board to get some idea feedback since I am considering how to layout this dual loop

 

I am currently looking at putting together a system with 2x 480 radiators and 2x D5 pumps. Currently my thought process involves a shared reservoir, so the loops would look like this....

 

Rad1<<<<<CPU<<<<Pump1<<<<RES1>>>>Pump2>>>>>GPU(parallel)>>>>>Rad2

>>>>>>>>>>>>>>>>>>>>>>>>>>>^^^^^^<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<

 

This way the radiator on the CPU can dissipate some excess heat from the GPU loop should it start to build up, though I am still wondering if the GPU water will effectivley 'bleed' its heat into the CPU loop.

 

Alternative options involve two seperate physical loops (through the purchase of an additional res, but then I will likely scale the pumps back to DDCs), or setting up the two D5s in series to make one loop that will go CPU>Rad1>GPU>Rad2 before returning.

 

Anyone have any thoughts on these setup that should be considered?

[TBNRunity]

If you are cooling 3x 980's I am sure money is not an issue. And 2 reservoirs will be a lot easier, and In my opinion a lot easier to work with if you are looking to do parallel lines for the gpu's.

[airdeano]

single D5 can easily power that loop as a single loop. the DDC35/50x can

as well ,but should be noted, a heatsink/fan for that pump would be necessary

for longevity.

 

dual loops are exciting, but really a plumbing nightmare over the smallish

temperature gains. the GPU loop would be the "hotter" side of the plan.

with TDP upwards of 150-200watts x3, but seemingly, most that have a single

loop have contained temperatures of 40-50° on GPU and 60-70° on CPU

depending on skills of overclocking/voltage, device blocks and rad/fans used.

 

what chassis/case is used?

[Cyong]

single D5 can easily power that loop as a single loop. the DDC35/50x can

as well ,but should be noted, a heatsink/fan for that pump would be necessary

for longevity.

 

dual loops are exciting, but really a plumbing nightmare over the smallish

temperature gains. the GPU loop would be the "hotter" side of the plan.

with TDP upwards of 150-200watts x3, but seemingly, most that have a single

loop have contained temperatures of 40-50° on GPU and 60-70° on CPU

depending on skills of overclocking/voltage, device blocks and rad/fans used.

 

what chassis/case is used?

 

At the moment a Corsair 900d is winning me over...