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Old May 18, 2008, 06:14 PM
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Originally Posted by SKYMTL View Post
Oh, that is beautiful. The only thing that slightly messes up the image for me is the cooling tower that attaches to the DFI board out the back of the case...ugh.

What case is that?
Good pickup, I didn't see that at all.

I have to admit that I got a bit nostalgic seeing the Lanparty logo on the SLI bridges... :)

Great looking build, you're going to have to explain how the GFX card flow works. I'm trying to work it out in my head and just can't figure it out.
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Old May 18, 2008, 06:51 PM
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Originally Posted by sswilson View Post
Great looking build, you're going to have to explain how the GFX card flow works. I'm trying to work it out in my head and just can't figure it out.

that. in my head all i can figure is it would just go straight threw the barbs, maybe a minimal amount of flow threw the card blocks
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Old May 18, 2008, 07:11 PM
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It's a parallel water block setup. It basically gives the coolant a choice of three pathways (waterblocks) to travel through, in order to get to the outlet side. It can be a little weird to follow, but just keep in mind that as the water enters each block, it has the choice of flowing straight through to the next block, or flowing down into that block. But ultimately, the water HAS to travel through one of the blocks in order to make it out the other side.

Doing it this way lets all three cards receive the same temperate coolant, whereas a series setup would have the last card in the chain getting warmer coolant. On the other hand, if it's not done cleanly, you can wind up with less pressure drop down one path over another, which can create a flow imbalance.
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Old May 18, 2008, 07:13 PM
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So two of the blocks have a "pass-through" which is the line we see coming from the first and second blocks? Is this built into all of their newer blocks, or is it a special order for Tri-SLI?
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Old May 18, 2008, 07:30 PM
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It's actually been pretty standard on most full-cover waterblocks (Not the 9800GX2's, though) lately, by virtue of the manufacturers wanting to maximize your connection options. Normally, you'd be blocking off two of those openings with included plugs, but as the photo shows, it can also be turned into a parallel setup with multiple blocks. The only catch is that with barbs on both ends, deep-threaded barbs could partially block the coolant's pathway down into the block (especially with the trend towards thinner, single-slot waterblocks).
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Old May 18, 2008, 07:56 PM
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Cool!!!

Ok that makes sense now. I'd imagine there would be a little bit of flow lost between the first and last card in a Tri setup, but if there isn't much restriction I can't imagine it would be more than one or two degrees difference.
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Old May 18, 2008, 10:15 PM
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You don't like the DFI cooler? I find it kind of cool, although its not black like everything else. (yet) Its nice that it actually fit in there between the case and rad, because without it the chipset temps are kind of crazy. DFI chose to put a heatsink the size of a dime on the chipset then give you this big awkward thing to mount, but it does get nice and hot.

So I'm using the machine as I type, temps are great!

CPU idle 25 load 33

GPUs idle 32 load ? (havent tested yet)

So far I pulled 13380 3dm06 on all stock clocks everywhere. Not the greatest score but a good place to start from. 2 of the cards are voltmodded already, the third will be done very soon. These cards pull 1ghz by themselves with the voltmods so we'll see how they do in crossfire.
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Old May 18, 2008, 10:30 PM
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The parallel setup is working perfectly.

You have to think of the left side stack, from the inlet all the way through to the bottom, as one big manifold. It becomes a high pressure area full of water that is pushing in every direction trying to get out of there. There are 3 exits, the 3 blocks. The 3 exits allow the same amount of flow because they are the same blocks. The barbs are made specially for this application, and do not penetrate too far (you'll notice the top barbs have spacers). Once the water gets across the blocks, it gathers again on the right side 'manifold', and exits through the top barb.

So I go pump ou --> fusion --> rear rad --> GPU stack --> front rad --> pump in

I could not do series because of the small case. The bottom card is basically touching the floor, ironically covering the DFI board's status LED, post code readout, power/reset buttons, and a slew of other connectors I never use.

I am so happy I finally have triple crossfire working with good temps ;) Its been a long process... but I was determined to finish it before the 4870s came out or I'd have to cry. I'll post pics of the completed setup once I make the drive brackets and finish up the cable management.
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