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Old February 9, 2011, 05:23 PM
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Default [Solved] Advice needed: Keep or Not.. Barb vs Compressions SLI Connection 56k Warning

Hi everyone,

I just recently got another GTX 580 for SLI, and I am currently watercooling both in parallel.

Here's a picture of my entire loop. (ignore my thumb)



Here's a picture of the SLI connection, no leaks yet and has been on for a day already.



Now I am concerned that the barb and tubing would leak one day without clamps.. but I love the look..

Originally, the plan was to use compression fittings but there is clearance issue with the bottom card and the backplate.. I couldn't connect the compression fittings to the waterblock cause of the obstruction from the backplate.

So on to the second plan.... 3/8 tubing and 1/2 barbs..... but!!! I couldn't get the damn 3/8 tubing over the barbs (yes I used boiling distilled water) .. so I opted for 1/2 tubing. and above is the results.

Now the third plan is coming in tommorow from daz.. 2 1/2" Rotary compression fittings for the bottom card. Now I chose the rotary straight compresison fitting because it has a built in 8mm spacer.. so I will no longer have to worry about the backplate obstructing a connection. This is most secure but at the cost of aesthetics.. will look wierd with a spacer.



So the dilemma is... stick with Plan 2 or move to Plan 3? If the probablity of plan 2 not leaking at all I would like to keep it as is.

Oh and no pre-made SLI connectors please :D would like to see tubing.

Thanks for reading, and if you have any feedback on my current loop to make it better let me know!

RESULTS OF ROTARY FITTINGS !~!



They did not turn out too bad! I will be keeping it this way!

And if anyone is intrested in temps.. I get 48-51 degrees load on both cards and 28-30 idle. @ 950/2200 @ 1.15 mV

Last edited by vohiep84; February 10, 2011 at 07:18 PM.
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Old February 9, 2011, 05:54 PM
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It won't leak as it is. The clamp is just to keep the tubing from physically falling off the barb in a longer run of tubing. With such a short run with no sideways tension on the barb the chance of the tubing spontaneously removing itself from the barb is very low.

I would just leave it as is, or a dremel to "fix" the backplate on the bottom card to allow the use of normal compression fittings.
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Old February 9, 2011, 06:01 PM
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Yeah, I was thinking to myself what possible way could it leak unless there was too much pressure but the water seems to be passing through it easily.

:P no to dremeling.. i tried w/o backplate but the pcb got in the way by a hair.
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Old February 9, 2011, 06:04 PM
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Dremel the PCB? :D
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Old February 9, 2011, 06:16 PM
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if you are worried maybe grab couple of skinny white zipties
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Old February 9, 2011, 06:20 PM
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I will not win a contest but I use those kind of clips on my 1/2 tubing over 1/2 barbs, I will never trust compress barb, with the time I learn to like the look it give. But I,m black on black, not sure how it will look on your white tubing, you can paint them ...



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Old February 9, 2011, 06:30 PM
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I actually tried to ziptie the tubbing with tiny black zipties.. once again the backplate leaves little to no room for anything ..

Not seeing your picture Botat..
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Old February 9, 2011, 06:38 PM
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other one don't see my pics ?
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Old February 9, 2011, 06:44 PM
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Yeah I see it now and you said it best. it won't win any contests
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Old February 9, 2011, 07:02 PM
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How much does the fitting touch the PCB by? Perhaps you could dremel the backplate, and then use a small 2mm spacer to raise the fitting up off the block just that little amount required to solve the problem.
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