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Advice needed: Crossfire fittings for watercooling

t_ski

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First, here is my current setup:



I ordered a second card and am looking to watercool it eventually, but I want to try to figure out the best way to run the loop before I do. I am thinking about getting two of these:

http://www.performance-pcs.com/catalog/index.php?main_page=product_info&products_id=25783

I will use the current setup, but add these barbs between the cards. That means the flow will be split as it enters the first vid card block, then joins back together when leaving the first block. I believe the refer to it as parallel flow.

Current loop flow comes from the pump (bottom right in the pic), to the bottom CPU barb, out the top CPU barb into the vid card WB, out the vid card block through a 90 to the mobo block, then out the mobo block through another 90 (top left of pic) to the quad rad hanging off the back of the case, into an EK res and returning to the pump through the other tubing that runs across the top of the board and down the right side.
 
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Depends on what type of block you get for your matching 5970. The Koolance one has full coverage but they dont match up your current block.

Are you planning on getting the exact same block? If so that may make things easier. Basically you could keep your current setup and cool both cards as if they were one big setup with two of those connectors, it would be a series setup vs water going from gpu1 to gpu2 then back to the NB/mosfet's. Should be good if the current temps are well under what you like. :)
 
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t_ski

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Depends on what type of block you get for your matching 5970. The Koolance one has full coverage but they dont match up your current block.

Are you planning on getting the exact same block? If so that may make things easier. Basically you could keep your current setup and cool both cards as if they were one big setup with two of those connectors, it would be a series setup vs water going from gpu1 to gpu2 then back to the NB/mosfet's. Should be good if the current temps are well under what you like. :)

Yes, the same EK FC5970. barbs would line up, of course. Got more details on what you mean by your flow description? Not sure I follow what you mean.


The Danger Den look nicer than the Koolance. With those BP fittings reach from the current card to the second card in the red slot 2nd from the bottom? The are three slots between the two.
 

t_ski

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Anyone else have any suggestions?
 
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Can't remember where I've seen a comparison between parallel and serial loop. Or for that matter which is better. But I will follow this, since the same is ahead of me for the second card.

With a good pump like yours I'd guess it doesn't really matter, since the water is circulating fast and there's plenty of flow for both blocks.
 

t_ski

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Between the D5 set to #5 and the EK top, I think I'm good on flow. I actually started with two pumps and two EK tops, but had such horrible problems trying to get them to bleed the air out that I just got rid of the second one. Temps are great: in fact, they're too good for the 5970, as the card has issues when the cores are below 28C. Yes, the card will idle around 24C. :pimp:
 
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Yes, the same EK FC5970. barbs would line up, of course. Got more details on what you mean by your flow description? Not sure I follow what you mean.

Ok, so if you want to use two exact blocks you can use two of those connectors. Basically the flow through the cards will be in cooling both cards at the same time rather than cooling gpu1 then flowing to gpu2. Either way it will probably reach the same equilibrium as far as temps are concerned.

Oh and send me your address, I've got a sack full of 1/2" black plastic clamps if you want them. Maybe 10 in all which, imo look better than metal tighteners.
 

t_ski

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Thanks for the offer, but I don't care much for the Herbie clips. Might go with some Koolance spring clamps when I get the second block.
 

Naekuh

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