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Radiators in parallel or series?

post #1 of 24
Thread Starter 
I was wondering about this. I have two 120.1 radiators (same brand, model, make) and am currently running them in series, will running it in parallel improve my temperatures significantly (by significantly, I mean enough to facilitate a dismantling of my loop)?

Hoping for an answer from the watercooling gurus in the forum since most other sources on the internet haven't been quite informative (and are mostly based on conjecture rather than testing and personal experience).

Current setup

Res---->Pump---->Rad---->Rad---->Waterblock

Proposed setup:

Res----> Pump---->2xRad in Parallel----->Waterblock
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post #2 of 24
I dont think so. If anything, your loop isn't going to flow as well since your pump will have to drive fluid through both rads simultaneously. This may actually decrease the efficiency of your loop...
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post #3 of 24
I would expect that it would not make it cooler.

I qualify my answer by this thinking:
-series rad
a sample of water would travel through both rads and get a chance to have heat removed twice, once per rad.

-parallel rad
a sample of water would travel through only one rad and only have one chance to have heat removed.
 
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post #4 of 24
or you could just spend $40 and buy a better block?
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post #5 of 24
id say if the cooling at all would get better, then in series as the first rad would pre-cool the fluid for its next rad to reach a lower base temp on input. but thats just me
post #6 of 24
Thread Starter 
@ just_nuke_em - Hmmm...interesting, actually I never thought of that...the water would pass through a radiator only once.

@javier - was wondering about that, some people have said that the parallel setup would actually make the pressure drop less...

@Bladey - lol, I'd actually love to if I had money to do that. as it is I'm practically broke so that's out of the question.

@hitman1985- so series is the way to go then?
Edited by Sangko - 2/21/10 at 11:35pm
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post #7 of 24
No, don't split it up, just keep it as pump to rad to rad and not pump to rad pump to rad

The difference in temps well be so minimal and that the pump will flow water through the easiest way, so if it is not correctly set up, its basically passing a whole radiator and splitting performance greatly. People don't do this for a reason.
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post #8 of 24
@ op, yes it would dissipate heat better that way, my honest opinion
post #9 of 24
if done correctly and he knows how to split the flow evenly then go ahead but the better temps? IDK how much.

Post 900 ^_^
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post #10 of 24
Thread Starter 
Thanks for the replies everyone. I guess I'm gonna keep mine in series.
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