Theres a moose loose aboot this hoose! Weebeastie!

Biffa

Biffa

Biffa

Man of Honour
Joined
30 Oct 2002
Posts
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Location
Surrey
IT LIVES!!! MUHAHAHAH!

P1080565.jpg


Preliminary rebuild complete, letting it do a little bit of Folding at the moment :)

full_swing.jpg


Having "fun" trying to optimise the layout of the loops for optimal cooling, think I've been through two iterations of layout, 3 sets of fans and I'm still not happy :D

Still at least it gets to stretch its legs a bit before we start again :D

And for those with a voyeuristic tendency.. : http://www.3dgfx.net/weebeastie/summary.html :p
 
That is a thing of folding beauty!

How do those aqua gpu blocks work? I'm trying to work out the flow path with great difficulty!

What rads do you have 2x 360?
 
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OK :)
1 Dual pump XSPC bayres with two DDC pumps
1 x PA120.3 in the roof (incoming)
1 x XSPC RX240 in the front (exhaust)
1 x TFC 120 in the back (exhaust)
11/16mm tubing
Distilled water (not deionised) with silver coil and ptnuke

The flow to the graphics cards is a parallel water flow which is less restrictive than serial apparently. I originally had it in serial (one pipe between each card) but am trying parallel at the suggestion of some of the guys at Xtremsystems.org

The picture above is v1, v2 is a bit different:

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As you can see I added a lian li side fan thingie, which is not much chop but adds some airflow into the case, because I noticed the temps dropped if I ran it with the side off.

Current water flow is as follows but if you look at the pic above its red for the vrm/nb flow, then blue for the CPU part, then green for the gpu flow section:

Basically like this:
pumpflow2.jpg


Its a bit tricky but in order to try and "inline" the two pumps, you can see one side of the flow goes to the second pump and vice versa, that also gives me some redundancy if one pump fails.

But am thinking of changing it a bit as the CPU is still getting hot, oh that and getting 1850 Scythes rather than the 1450's I've got now.

So basically the main change would be swapping the 240 and the 360 around and putting the VRM/NB blocks on the GPU side of the loop. Although with water equalising temps over time in a loop may not make that much difference. Think the fans will help more :D
 
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That's not parrallel - the first (top) card is short circuting the loop
but acheiveing parrallel (or series) with the psu so close to the bottom card with be near impossable

tri-xfireparallel.jpg

Parrallel - the in and out MUST be at opposite ends
like your diagram but with the in moved to the bottom card.
The advise is good (especially with 4 blocks) - but I guess it wasn't fully explained :(

tri-xfireseries.jpg

Series - the way it's usually done

I'm guessing the you have 18w DDC and the power of the pump is forcing water all the way down the stack of cards.
Never seen it done that way - but with the ID of the sli connectors offering less resistance then the block path it must be working.
And your temps prove it is, the guys at XS have usually try every option possable still can't beleive how well it's worked.
 
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The way I understood it is the ins and outs being at opposite ends is irrelevant to the principle of parallelism, its more how the water flows across the blocks in multi gpu setups.

Its parallel because the water moves parallel through the blocks from left to right concurrently, whether the water exits from the top or bottom.

As you said its working, and I had serial in he past, the temps are around he same, but its not the gfx I'm concerned about anyway its the CPU :(
 
Your right, I was wrong to say your loop wasn't parallel - it is
When i first saw the screenies i thought the 58, 58, 55, 58, 84, 88, 89, 99 were all temps.
should have edited the first line after i realised and added the last paragraph, sorry biffa.

Yes it's parallel in your case, as the restriction of the blocks means all are block 'feed' from the inlet.
And Yes its parallel as the water moves across all the blocks simaltaniously

But I should add that ins and outs at opposite ends is an improvement on what you have.
If some one was to copy the diagram of your loop, but with a different pump,
cheap small ID compression fittings/sli connectors or smaller tube size for example,
then the same arrangement may act differently.
The top card taking 50% of the flow, the second 30% the third 15%
and the bottom one 5% (guessed numbers)

With the in/outlet at opposite end, the top card is no longer a possible 'short cut' thus improving the loops design.

So Yes you gpu's are running in parrallel, but your configeration is not universal that what I was trying to say.
It's very specific, as custom watercooling should be, like chemistry or baking.

to ill to sleep, and to sleepy to do anything right, sorry mate
 
No need to apologise this is a conversation/discussion amongst friends :) All input is helpful, I want to optimise. Have a proper AquaGrafx multi sli connector coming when they finish making it :D So will see if that helps.
 
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