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Linked loops? Restrictive mess or possible? - Page 2

post #11 of 18
Thread Starter 
Quote:
Originally Posted by Snerp
It's pointless.
You say that so often it's lost all meaning.

Quote:
Originally Posted by ThaWaxShop
if each loop has its own rad and pump it would benefit
Yes, each loop would be the same as if it were self-contained. Each with it's own pump, radiator and lines.

Quote:
Originally Posted by Snerp
Why wouldn't you just run two seperate loops? By sharing the same water it will be just the same as if you ran a two rad two pump single loop.
Why? It's a secret

I think it would be at least a little different since the loops in the dual setup would be shorter. If the resevoir is the central point, and each loop only has, say 5' of tubing, each pump only has to push 5'......if you did one large loop, that's 10' of tubing in a single push.....possibly with some extra restriction due to routing to run pump-rad1-CPU-rad2-GPU, that's extra tubing right there......so it would be more like two 5' loops or one 15' loop.....that was my thinking, less tubing........


Quote:
Originally Posted by ira-k
Yeah and another pump in the loop just adds that much more heat dump to the loop..
Oh, trust me, the extra heat from a second pump is not even going to be noticed in this system


Quote:
Originally Posted by Biomech
Don't know if this helps but my setup is as follows:
What pump are you using? That is an amazing loop.....1 pump and running 5 water blocks and 2 radiators?
post #12 of 18
Quote:
Originally Posted by Thumper
What pump are you using? That is an amazing loop.....1 pump and running 5 water blocks and 2 radiators?
Danger Den D5 with 1/2" ID Tygon. CPU at load is 42-45C, MB load @ 38-40C, and GPU's load at 55C (Master card can reach 64C @ load when playing certain games that tend to load this card more. i.e. tombraider, Prey.)

Pics are in my gallery

EDIT: I should note that my GPU's are volt modded to run at 1.5v and cpu is pushing 1.45v.
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post #13 of 18
Quote:
Originally Posted by Thumper
You say that so often it's lost all meaning.
Too bad I'm right

Quote:
Originally Posted by Thumper

Why? It's a secret

I think it would be at least a little different since the loops in the dual setup would be shorter. If the resevoir is the central point, and each loop only has, say 5' of tubing, each pump only has to push 5'......if you did one large loop, that's 10' of tubing in a single push.....possibly with some extra restriction due to routing to run pump-rad1-CPU-rad2-GPU, that's extra tubing right there......so it would be more like two 5' loops or one 15' loop.....that was my thinking, less tubing........
Well the thing is you will see better temps if you ran two separate loops and you have everything to run two separate loops. That's why I was saying it was pointless. You may see better temps this way rather than using everything in one bigger loop, but two separate loops will give you the best temps. You're already doing all the work for the great temps, but then by combining the water you ruin it.
    
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post #14 of 18
Quote:
Originally Posted by Thumper
Has anyone tried, or seen tried running 2 seperate loops with one shared resevoir?

What I am talking about is two totally self sufficiant loops, one for the CPU, one for the GPU...both with it's own pump, radiator and lines, but with a shared resevoir? Maybe even having 2 resevoirs but somewhere in the loop joining them together with a 3rd resevoir or crossover point.....

I did a quick skecth in paint.....I know it is terrible, I am at work and just threw it out so no laughing
You could do the calculations. All the data is probably available.
There are three choices:
Do the calculations*
Set up both and test
Believe the uninformed, guiding the unknowing.

* Find the PQ curve for the pump(s)
Find the flow restriction and heat removal curves for your rad(s)
Find the flow restriction and heat removal curves for your blocks

For example see attached:
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post #15 of 18
I'm runnig a 2 loop system right now

1 loop for proc with dual rad#1
1 loop for gpu with dual rad#2

meets at a res i made out of pvc

my x1900xt at load is 37
post #16 of 18
Thread Starter 
Quote:
Originally Posted by Snerp
Too bad I'm right

See, that just goads me on

Now I have to set it up both ways.

I see you're point, 2 seperate loops is definatly better than one huge loop, that was the basis of my thought......I just wanted to "link" the 2.

Would it make a difference you think if the shared Res was a passive cooling res with a large capacity?
post #17 of 18
Quote:
Originally Posted by Thumper
See, that just goads me on

Now I have to set it up both ways.

I see you're point, 2 seperate loops is definatly better than one huge loop, that was the basis of my thought......I just wanted to "link" the 2.

Would it make a difference you think if the shared Res was a passive cooling res with a large capacity?
Then there comes my argument...

Why not just have two huge passive cooling res setup? Then you temps could be even lower!!! It's all up to you man...I'm just trying to help you make your system the best it can be
    
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post #18 of 18
Thread Starter 
Quote:
Originally Posted by Snerp
Why not just have two huge passive cooling res setup? Then you temps could be even lower!!!
Well, I am going internal.....not sure TWO huge passives would fit

Quote:
Originally Posted by Snerp
It's all up to you man...I'm just trying to help you make your system the best it can be
Hey, and I appriciate it, I admit I am a newcomer to the water game and I am currently building my first system, so I am not claiming to know more than those that have experience......just brainstorming ideas.

The ultimate goal of course is super low temps, and I am leaning toward 2 seperate loops........
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