Originally Posted by cmpxchg8b
That will work fine. It actually is considered less than ideal due to slightly different resistance in GPU-1 and GPU-2 flow paths, but in practice the difference is negligible.
Not a dumb question btw; there was a lengthy discussion somewhere around here on this subject.
My setup is like the picture below, where the input is in the bottom and the outlet also in the bottom (see pic). So at first I thought the coolant just come into the first GPU (bottom) and then exits out instead of going through the second GPU (the top one). But someone explained to me how it work and it make sense. Thanks for your reply!