Connecting SLI GPUs in serial

Mark_D

Mark_D

Mark_D

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9 Aug 2009
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Chislehurst, Kent
Having not created a custom loop before I'm worrying about various things, this being the major one. If I connect one GPU directly after another then the water entering the second card will be significantly warmer. Will this not affect the temps on the second card significantly?
 
The water in your system reaches an equilibrium. Hence why it doesn't matter what order you put things in your loop.
 
Just so you know also, when i had mine running with a single flow through both cards, there was no temp difference. I think the flow of fluid is too fast for it to warm up significantly.

Last did water cooling on two 680's.
 
Yup, i used to always run them in serial, never had a problem as long as your pump isnt set too slow. I tried switching between serial and parallel once just to see if it made a difference to temps and it did not.

Just bear in mind though if your GPU block uses a jetplate in its design you cant connect them in the traditional serial method where you connect to the inlet of one card and then a small length of pipe between the outlets of the two cards as your flow will be going backwards through one of the cards and the jetplate wont be getting used. So in that case its better just connecting them in parallel.
 
Greebo said:
The water in your system reaches an equilibrium. Hence why it doesn't matter what order you put things in your loop.
Click to expand...

Its amazing how often this question comes up, 'Loop Order' should be made a sticky, a really short one. 'As long as the res feeds the pump it doesnt matter'.
 
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