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Discussion Starter #1
could i setup my wc to work like this, the pump>res>cpu/gpu block>rad

wondering.... using two y splitters...
sry i cant draw with mouse, too shakey
 

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Discussion Starter #3
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Originally Posted by Apollo4g
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yup you could!
But note that it will cause a pressure drop.

haha im sorry man but that drawing is really bad haha

thats what i thought, and i have really shakey hands, thats y i suck at drawing and handwriting, everything looks like i write like a doctor....
would it be better temps? because i think that it would since the water would be cool.
 

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it would work with a high flow pump... but dont even try it with a low flow pump
 

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yup might give you slightly better temps on your GPU. CPU will stay the same if you had it 1st in your loop before.
Not worth the trouble if you have your loop setup already.
Im guessing you have pump>rad>CPU>GPU right?

a 655 pump should do it just fine.
even a ddc/petra's top would.
 

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splitters lower flow aswell which will hurt a little...
 

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Discussion Starter #7
Quote:


Originally Posted by Apollo4g
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yup might give you slightly better temps on your GPU. CPU will stay the same if you had it 1st in your loop before.
Not worth the trouble if you have your loop setup already.
Im guessing you have pump>rad>CPU>GPU right?

a 655 pump should do it just fine.
even a ddc/petra's top would.

lol i have a mag II le...
 

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Why not just run them in series? Is there a reason you want to run it like that? The most restrictive block will get the least flow...And most of the time the most restrictive block is the CPU block....
 

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Originally Posted by ira-k
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Why not just run them in series? Is there a reason you want to run it like that? The most restrictive block will get the least flow...And most of the time the most restrictive block is the CPU block....

i was just wondering.
 

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Isn't this a hypothesis and not a theory?


More water will flow through the less restrictive block which would slightly starve the other block. Temps of one would rise at the cost of the other... if you have a low flow pump. With bigger pumps, it won't matter as much as long as each block is getting like 1.5gpm or more.
 

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Yeah series should be better, I asked the same question a while back and got the same answer, but I think I understand why a bit better now.

Think about it this way, going to guestimate some numbers as examples:

SERIES
Lets just guess you get 1.5 GPM if you ran them in series, your overall system flow rate is 1.5 GPM and each block is getting 1.5 GPM, very simple and each block consistently gets the same flow rate regardless.

PARALLEL
OK, so if you got 1.5 in series, removing the one block and splitting out the flow across two blocks will cut the system flow rate in half across each block (assuming they were the same), so you should have less "System" pressure drop. The result of this is a net increase in system flow rate which sounds good, but the reality of it is... you might increase your system flow rate maybe 30% at most because of the pump/system curve relationship. Lets just guess this turns out to be 2.0 GPM system flow rate, sound good right? Well remember that you split your system flow rate across each block, so your blocks are actually only seeing 1.0 GPM.

So series will still produce more flow rate across the blocks where you need it the most, your radiator performance may be slightly increased at the 2.0 GPM, but it's not so good at the water blocks. Then there is that nasty little "water will find the path of least resistance" issue. So... the additional possibility and likelyhood is that your CPU block is more restrictive than the GPU block, in the end you might get a split similar 0.7GPM across the CPU and 1.3GPM across the GPU maybe worse depending on the blocks.

As everyone noted, running in series is the better option both because your system flow rate equals the water block flow rate (not cut in half), and you ensure there isn't an imbalance between blocks.
 
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