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More info?)
In many tests it has been shown that the tradeoffs between parallel
and series are minimal. When changing to parallel, the drop in
flowrate and head pressure per block results in a temp loss greater
than the difference between two blocks piped in series. Same applies
for radiators - when piped in parallel the pressure drop results in
lowered performance thru-out the rig. Head pressure from multiple
pumps in series rather than parallel is vastly improved.
Extensive testing has been demonstrated over at forums.procooling.com
that basically proves factually via regulated testing with controlled
variables that series always wins over parallel due to head pressure
and flowrate being the two crucial factors in any watercooling system.
As a sample of the technical detail of some of the testing done as
part of the research into this, see Bill Adam's Review of the
ThermoChill watercooling radiators
(http://www.overclockers.com/articles778/), which is possibly the most
extensive and definitive radiator review for watercooling to date, and
has been used as a basis for many theoretical models being used to
improve cooling performance across the whole range of watercooling
components.
Watercooling is no longer a risky game particularly as in the
background the proper research is getting done to make it easier,
safer and more effective and efficient, as well as quieter.
Marci - Technical Manager
ThermoChill / Over-Clock UK Ltd