*sneaks in when nobody is looking*
Hmmm... read the linked article and the discussion on "effectiveness"...
Given two choices, I'll choose that Sheikh did a "ppj" at conveying the core of his thought.
*digests the article and gets heartburn*
hmmmmm.....
*gets a wicked gleam in his eye*
Well heck, I get it now....
*builds a pump flow control system slaved to the inlet temp of the radiator and die temp of processor*
*sets control loop to adjust flow rate to maintain rad inlet coolant temp = die temp*
*makes a kit with small pump, small rad, and his new super-duper control system*
*sells it as most "effective" water cooling kit on the market*
muhahahahahaahhahahaha
*casually drops a note of serious content on the floor*
Summary of what I think his "core thought" was :
A measure of the relative thermal efficiency of a test group of heat exchangers (be they cold plates, blocks, rads, etc.), which is directly proportional to the amount of energy removed from a system under an identical set of conditions, can be measured by the deltaT across the exchanger (given the identical test conditions). Given more efficient components, a specified deltaT between the heat source (CPU, GPU, mem, etc.) and the ambient environment might be obtainable with lower coolant flow (both air and liquid), which could lead to smaller size and less noise ($ maybe, maybe not...).
Comment1: *Optimal* efficiency is quite rarely, if ever, 1.
My other 2 cents: As shown by my mad scientist device created before a moment of lucidity overcame me, thermal efficiency alone, *as defined as he did*, accomplishes nothing (except maybe a core meltdown). Ultimately the desired goal is to maintain the lowest temperature at the energy source (in this case the component die temps) in the most efficient manner (different people apply different metrics to the equation... noise, $, size, etc., etc.) within a given set of constraints (although some place no constraints other than "is it possible"). That having been said, if one examines the dominate factors in the equations for fluidic heat exchangers, there is much to be said for velocity and turbulence, which come at a cost
*kicks note into the corner under the end table and hopes nobody notices it*
*waves hi on the way out*
*skips off into the darkness of "lurk-dumb" again cackling madly*