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5/8 inch od or 3/4inch od ?

post #1 of 14
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i really need to know what sized tubing will be the best for me. im going to be cooling my cpu and gpu with a 360 rad a 240 rad, in a 800d case, so im probably not going to have that much extra space. will the 3/4 tubing be to hard to navigate turns with ? will i have to us 90 or 45 degree angle compression fittings ? or does it not really mater at all ? oh and if you have any recommendations on what brand of tubing i should use that would also help.
post #2 of 14
I have a 800D with a 360 and 240 rad with 2x GTX 580 and a CPU block... plus a mobo, and ram blocks. I didn't have any issues using 1/2 ID x 3/4 OD in my build. It's kind of crowded... but I like the looks of it. You can look at the my build log thread in sig to see what it looks like. If you are cooling just the cpu and a gpu... you shouldn't have any space issues. If I had to do it over again... I would have used more 45's on my build. I'm using feaser tubing, but primochill seems to be the popular brand.
    
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post #3 of 14
Quote:
Originally Posted by hutchmuch View Post

i really need to know what sized tubing will be the best for me. im going to be cooling my cpu and gpu with a 360 rad a 240 rad, in a 800d case, so im probably not going to have that much extra space. will the 3/4 tubing be to hard to navigate turns with ? will i have to us 90 or 45 degree angle compression fittings ? or does it not really mater at all ? oh and if you have any recommendations on what brand of tubing i should use that would also help.

Word of advice. Don't use 1/2" ID 5/8" OD tubing, kinks at even the slightest pressure.

Go with 7/16" ID 5/8" OD, should be plenty of flow. IME, 3/4" OD is quite rigid.
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post #4 of 14
my buddy uses 3/8 id tubing by 5/8od
IMAG0054.jpg?t=1317966309
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post #5 of 14
See what others are using. Poll: Tube Size vs Fittings: http://www.overclock.net/t/1165477/poll-tube-size-vs-fittings
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post #6 of 14
Going from 1/2" ID x 3/4" OD and 3/8 ID x 5/8 OD performance is the same, some people are obsessed with flow rates and prefer the larger Inner Diameter (ID), while other's prefer 3/8 ID x 5/8 OD because the larger OD prevents the tubing from kinking.
post #7 of 14
Cathar has shown that the difference between 1/2 ID tubing and 3/8 ID tubing is ~0.2C, ie nearly immeasurable. 3/8 ID, 5/8 OD is easier to work with, takes up less room, and performs the same as 1/2 ID, 3/4 OD. And 1/8 thick walls like 3/8 5/8 or 1/2 3/4 is going to have superior bending radius without kinking.
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post #8 of 14
I prefer my 3/8 x 5/8 tubing thumb.gif
 
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post #9 of 14
3/8 x 5/8 is what I use...works just fine.
post #10 of 14
i vote for 3/8 x 5/8.. less kinky ..as i look @ the 1/2 id collapsed wth.gif
 
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