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post #291 of 353
The best scenario I can come up with would require that you buy an Aquacomputer D5 with Aquabus (http://www.aquatuning.us/product_info.php/info/p13775_Aquacomputer-D5-pump-mechnics-with-USB--and-aquabus-interface.html):
Code:
   .-----------------------------------------------.
   v                                               |
 .---.                                             |
 |Res|->(XT)->(360)->(480)->(CPU)-.      .-(GPU)-. |
 |   |                            +-(D5)-+-(GPU)-+-'
 |   |->(XT)->(360)->(480)->(CPU)-'      '-(GPU)-'
 '---'

You could try it without the D5, but I just don't think you've got enough pressure left to get very good flow. Remember that these radiators and blocks are among the most restrictive. Also, it wouldn't work to put another XT where the D5 is placed because the XT focuses on high pressure between 0 and 1 gpm; and at that point you want a pump that can dish out 2+ gpm.
Edited by Electrocutor - 8/2/12 at 5:59pm
post #292 of 353
Thread Starter 
what about

res -> XT -> CPU -> CPU -> 480 -> 480 -> res

and

res -> XT -> GPU -> GPU -> 360 -> 360 -> res

depending on which one puts of the most heat, switch the rads

still using the same res for both loops
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post #293 of 353
I've never seen other similar builds with a simple CPU+GPU+GPU setup or anything like that have any trouble with Aquastreams, the pressure is more important than total flowrate. The arrangement you just asked about should work fine.
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post #294 of 353
Quote:
Originally Posted by asg View Post

what about
res -> XT -> CPU -> CPU -> 480 -> 480 -> res
and
res -> XT -> GPU -> GPU -> 360 -> 360 -> res
depending on which one puts of the most heat, switch the rads
still using the same res for both loops
If you want to stick with just the two pumps, then no matter how you play it, the flow will be low; the best flow you would get though would be in full series because the XTs have a perfectly linear PQ curve that favors low flow with high pressure.

Quote:
Originally Posted by Chunky_Chimp View Post

I've never seen other similar builds with a simple CPU+GPU+GPU setup or anything like that have any trouble with Aquastreams, the pressure is more important than total flowrate. The arrangement you just asked about should work fine.

If you take a look at the review graphs for water blocks and radiators, you'll notice that you have to get to a certain flow rate before the heat transfer starts kicking in well; after about 1.5 gpm, anything further doesn't do much.

[Edit]
And most simple builds are not: res->pump->pump->rad->rad->rad->rad->cpu->cpu->gpu->gpu->gpu->res with all rads and blocks high restriction.
Edited by Electrocutor - 8/2/12 at 6:22pm
post #295 of 353
You could do this to increase delta T a little, decrease the cooling on two gpus a little, but increase the overall flow:
Code:
   .-------------------------------------------------------------------.
   v                                                                   |
 .---.                                                                 |
 |Res|             .->(360)-. .>(480)-.                      .-(GPU)-. |
 |   |->(XT)->(XT)-+        +-+       +->(CPU)->(CPU)->(GPU)-+       +-'
 |   |             '->(360)-' '>(480)-'                      '-(GPU)-'
 '---' 

I added the connections between the parallel rads so you can see that you wouldn't need any extra tubing going up and down.
post #296 of 353
Thread Starter 
How do you your diagrams and insert them?

Moving the cpus between the radiators wouldn't change anything, would it?

Also, loose the third GPU. I am probably only going to use 2.
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post #297 of 353
Quote:
Originally Posted by asg View Post

How do you your diagrams and insert them?
Moving the cpus between the radiators wouldn't change anything, would it?
Also, loose the third GPU. I am probably only going to use 2.

I just use notepad with a fixed-width font, then copy/paste into a code tag.

Yes, you could put the two CPUs between the 2 blocks of two rads, but then you would probably want the first two to be the 480s since the GPUs dump more heat in than the CPUs. If you're only going for two GPUs, then you should probably try both series and parallel to see which gives you better temps.

Series is 4 times higher restriction than parallel, but with parallel you lose flow rate within each GPU like I mentioned earlier.
Edited by Electrocutor - 8/2/12 at 7:10pm
post #298 of 353
Thread Starter 
Code:
.-------------------------------------------------------------------.
   v                                                                  |
 .---.                                                                |
 |Res|             .->(360)-.               .->(480)-.    .->(GPU)-.  |
 |   |->(XT)->(XT)-+        +->(CPU)->(CPU)-+        + -> +        +--
 |   |             '->(360)-'               ' >(480)-'    '->(GPU)-'
 '---'

To simplify my tubing in the case and minimize the runs this would work better.

If I run into an issue with the pump pressure, I could always upgrade to the D5 ones when they become available.

Would separating the pumps like this, make a difference?
Code:
.-------------------------------------------------------------------.
   v                                                                  |
 .---.                                                                |
 |Res|       .->(360)-.                     .->(480)-.    .->(GPU)-.  |
 |   |->(XT)-+        + >(XT)->(CPU)->(CPU)-+        + -> +        +--
 |   |       '->(360)-'                     ' >(480)-'    '->(GPU)-'
 '---'
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post #299 of 353
Quote:
Would separating the pumps like this, make a difference?
Not like that. You would get some benefit (not a ton) if you put the second one after the CPUs and before the second rad block though.

FYI: only put the GPUs in parallel like that if you've 1.3gpm through the CPUs or better; that would give each GPU a flow rate of 0.65 which I would try to stay above. Otherwise put them in series so they get enough flow.
Edited by Electrocutor - 8/2/12 at 7:48pm
post #300 of 353
Thread Starter 
Code:
.-------------------------------------------------------------------.
   v                                                                   |
 .---.                                                                 |
 |Res|       .->(360)-.                      .->(480)-.    .->(GPU)-.  |
 |   |->(XT)-+        + ->(CPU)->(CPU)-> XT -+        + -> +        +--
 |   |       '->(360)-'                      ' >(480)-'    '->(GPU)-'
 '---'

Like this?
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