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Water flow rate in compression fittings

post #1 of 12
Thread Starter 
does all the fittings , no matter straight, 90 degree, or 45 degree will do the same job ?
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post #2 of 12
There is a difference, but not enough to care in most loops.
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post #3 of 12
Thread Starter 
what is the difference? which one will do better flow rate on cpu block ?
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post #4 of 12
in terms of flow, regular barb > 45 degree > 90 degree. Use regular ones when possible.
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post #5 of 12

Like wondergod said nothing you would ever see
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post #6 of 12
Thread Starter 
Quote:
Originally Posted by Los Hog View Post

Like wondergod said nothing you would ever see
wow. but in some circumstance, i need some 45 and 90 degree to match the angle.
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post #7 of 12
Quote:
Originally Posted by Los Hog View Post
[
Like wondergod said nothing you would ever see
Hadn't seen this chart, thanks for the post, plus rep.

Quote:
Originally Posted by M.IV.E View Post
wow. but in some circumstance, i need some 45 and 90 degree to match the angle.
But look at the number of elbows to lose one degree, 30? You can get away with a few.
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post #8 of 12
Hmmm enough of a reason to go for barbs over compression? Or am I being silly over less than a degree for a cpu/gpu loop?
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post #9 of 12
As with all things like this its probably a case of diminishing returns... and how obsessive you want to be about performance vs other factors.

The excellent graphs above show that there is some small effect from both the type of fitting used and the number of fittings - but the overall effect between the best and worst cases is still relatively small. - From the graph the differnece between 1 x barb and 25 x 90 degree elbows is only 0.75 deg C

If you are totally focussed on the performance of your loop and the temps, and there is nowhere else to gain anything temp wise then looking at optimising your fittings may give some small gains.

In most cases I'd bet people lose more CPU/GPU temp performance than this through their choice of blocks, pumps, rads, thermal compounds, fan config and case etc..

So for most people i'd imagine the choice of fitting will actually come down to looks, cost favourite brand etc
post #10 of 12
100% agree
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