Parallel Flow Between Two Video Cards

[TidaLWaveZ]

Can anyone help me to understand the path traveled by the liquid in a dual GPU Parallel liquid cooling loop?

 

I understand the serial loop, but just cant seem to understand the path the liquid travels between the video cards in a parallel loop.

 

I have looked at a lot of diagrams including EK's, but still don't understand.

 

Any help would be greatly appreciated.

[EdInk]

The liquid only travels in one direction into the block and out of the block, it can't flow back on itself. Imagine that while you try and work it out.

[TidaLWaveZ]

@theninja35 I might not be understanding you correctly, but when I read that it sounds exactly like a serial loop.

[TidaLWaveZ]

@EdInk Yes, but there's an extra path between the blocks.

[EdInk]

@theninja35 I might not be understanding you correctly, but when I read that it sounds exactly like a serial loop.

 

 

skip to 1:20

[neocronix2]

The fluid goes into the the gpu block and then into the first gpu, the liquid encounters resistance from the fins used the cool the gpu core. The liquid is then pushed on into the second gpu  from the gpu block because liquid follows the path of least resistance. At last the liquid flows out of the gpu's back into the gpu block and further down the loop. JayzTwoCents has a build with four gpu's in a parallel loop.

 

EDIT: three gpu's apparently

[X99stattrak]

The fluid goes into the the gpu block and then into the first gpu, the liquid encounters resistance from the fins used the cool the gpu core. The liquid is then pushed on into the second gpu from the gpu block because liquid follows the path of least resistance. At last the liquid flows out of the gpu's back into the gpu block and further down the loop. JayzTwoCents has a build with four gpu's in a parallel loop.

EDIT: three gpu's apparently

3 Titan x's *

[TidaLWaveZ]

@EdInk I watched like 10 times already and my brain just won't understand.

[EdInk]

@EdInk I watched like 10 times already and my brain just won't understand.

I think @neocronix2 has nailed it.. the micro channels in the GPU block create some resistance to the liquid so it finds the next easiest path which is up with the help of the pressure from the pump.

[TidaLWaveZ]

Does the liquid have to travel through the block in a certain way?  I was kind of under the impression that the left hand hole in the GPU block must be where the liquid enters and the left side must be where the liquid exits on each block. Judging by the video I'm guessing that this is not the case though, which makes it a little more clear.

[EdInk]

Does the liquid have to travel through the block in a certain way?  I was kind of under the impression that the left hand hole in the GPU block must be where the liquid enters and the left side must be where the liquid exits on each block. Judging by the video I'm guessing that this is not the case though, which makes it a little more clear.

 

 

Here's one to tease your brain 

[TidaLWaveZ]

So the liquid just splits off on multiple paths and the pressure from the pump keeps it moving?

 

If so, this doesn't seem as efficient for cooling as a serial loop, but I guess the temperature difference is too small for anyone to care.

[boarder2k7]

So the liquid just splits off on multiple paths and the pressure from the pump keeps it moving?

If so, this doesn't seem as efficient for cooling as a serial loop, but I guess the temperature difference is too small for anyone to care.

You potentially get less water flowing through each but you also have less pressure drop which kills flow.

The greater total flow is going to be in parallel.

[Philz69]

The water splits on the entry and joins at the exit, its as simple as that!

[Benji_w]

So the liquid just splits off on multiple paths and the pressure from the pump keeps it moving?

 

If so, this doesn't seem as efficient for cooling as a serial loop, but I guess the temperature difference is too small for anyone to care.

 

It just travels to where there is least resistance or something, can't remember.

[Emanuel_M]

Does the liquid have to travel through the block in a certain way? I was kind of under the impression that the left hand hole in the GPU block must be where the liquid enters and the left side must be where the liquid exits on each block. Judging by the video I'm guessing that this is not the case though, which makes it a little more clear.

so the leftokay is going so the way straight. The left side looks cut off. So it goes in then right down left down right so it would look like

_

_|

|_

So just think of a S a 2 or 5 but blocky

[TidaLWaveZ]

Thanks for all of the help, I now at least have a better understanding of the path.

 

One last clarification, does it not matter which side of the block is the input and which is the output (which way the liquid flows through the block)?

[EdInk]

Thanks for all of the help, I now at least have a better understanding of the path.

 

One last clarification, does it not matter which side of the block is the input and which is the output (which way the liquid flows through the block)?

Unless it's specified by the block manufacturer, then No.

 

it's preferable to get one that cools the VRM's/VRAM as well too.

 

 

 

edit: e.g 

[boarder2k7]

Unless it's specified by the block manufacturer, then No.

Yup.

The ones who spec it usually have internal flow paths that are best in one direction, using swirls to move coolant through some areas.