Originally Posted by somebadlemonade
but trains aren't a gas moving though a structure, if you're going to make this analogy, you'd have to make the trains run through a tunnel and where the cars are a volumetric measurement of gas(ie., cubic feet), and their movement is measured by how much volume is moved over a set amount of time(ie., cfm)
adding a set of fans for a push/pull does increase cooling efficiency, but the rate of increased efficiency is a logarithmic curve, meaning once you hit a certain point the rate of increased efficiency to equal the same increase takes 10 times the initial amount to increase it by a factor of 2
<_< please things about this stuff before you post, oh and adding a locomotive does increase efficiency, meaning they can go faster uphill and have better control over how fast it goes
I do agree that increasing the amount of engines for a train will increase the volume capable of being moved due to increased efficiency and power available.
However, the analogy was meant at a macro scale (and as a generalization) regarding CFM (and thus the logarithmic scale of total CFM you mentioned). If that convo/question wanted to go to 3 sig figs for dCFM, I wouldn't have answered/replied at all unless I had experimental data in hand.
On that note, has anyone measured CFM for Push/Pull on a H100? Most reports I see are for temperature changes.
Originally Posted by BangBangPlay
So I guess you never saw the video on YouTube where the reviewer hooked up at least 20 SP120 fans to an H100i (10 push, 10 pull if I remember correctly)? I figured that after a few on each end it would see diminishing returns, or no increase, but the CPU temps were reading in the negatives during a stress test. Of course it was loud and totally impractical, but it proved a point. So yeah the more fans the more air it moves through the rad, increasing cooling potential and efficiency.
If he had negative readings in Celsius, TinyTom would have had to switch out the coolant in the H100 for something like automobile anti-freeze, and insulated his board. Even then, there should have been condensation on the tubing. Rubber isn't that good of a temperature insulator.