Originally Posted by Jakusonfire
Working out likely flow rates is not really all that hard. Because of some hard and valuable work done by Martin and Stren and others, there are charts as you have seen of the PQ curves that pumps can generate and the pressure drop curves of various water blocks and radiators.
Its simple enough to work out if your pump will give over 1 GPM of flow in a loop you plan. If you look at the PQ curve for a D5 Vario
You can see that for 1 GPM of flow rate the max pressure drop is about 4.7 PSI
If you take the pressure drop curves of each component you want to use, say;
An XSPC raystorm
2 X Titan blocks
2 X ST30 360 Rads
and add the pressure drop of each component at 1 GPM flow
Raystorm ... 0.84 psi
EK Titan blocks ... about 1 PSI each for 2 PSI total if in series
ST30 rads ... 0.49 psi each for 1 psi total
for a total of 3.84 psi pressure drop, with plenty of room for extra drop caused by fittings and right angle connections etc ... which means that the D5 will produce over 1 GPM of flow at full speed, or that for 1 GPM a pump setting somewhere between 4 and 5 will be required.
If the total pressure drop of all your components is over 4.7 psi then the flow rate will be under 1 GPM
That is simple enough to do.
To actually estimate the exact flow rate you will get is much harder of course because the pressure drop of each component rises and falls with the flow rate, and at the same time the pressure of the pump falls and rises in the opposite.
It also becomes harder when less popular blocks like motherboard blocks are used where there has not been any or little detailed testing done so it can become a bit of a guessing game.
Some people believe that RAM / Motherboard / Chipset blocks are very restrictive, but just like all blocks it is a very individual thing. Older chipset blocks have very narrow, tight water ways but if you open up a modern EK RAM or Motherboard block they are just flattened tubes inside without the micro channels of CPU and GPU blocks to restrict flow very much. As a result they are not all that restrictive or high pressure drop.
This too is extremely valuable. I have seen some of Martin and Stren's work and it truly is invaluable stuff; seeing these charts posted here in such a manner shows me how to essentially put all of that work into action in figuring out exactly what I am going to need. It also reminds me to subscribe to Martin and Stren so that I can have this stuff on hand and also keep up to date with their hard work.
This post is just as invaluable as the pump sticky that was linked to me, for that I thank you. I am going to see if I can find the restrictions, flow rates, etc of every particular piece of hardware I have put together for this build. It uses some mixing and matching between block brands, though they're obviously all constructed of the same materials. This just gives me more research to do and hopefully I will find out if I what I chose is on par or if there are better blocks or even radiators for me to investigate.
Just as a reference point I have chosen:
Koolance 380I for the CPU
Heatkiller GPU-X GTX Titan "Hole Edition" (Nickel/Black) GPU water block and back plate (x 2)
Heatkiller NSB Rev3.0 Chipset Water Block (Nickel/Black) (For southbridge)
EK ASRock Z77 Extreme11 Motherboard Liquid Cooling Block (I won't be going with ASRock for my motherboard, this is just for example / reference as I don't know whether I will be going ASUS or Gigabyte yet and hence I have not started looking for the specific model's cooling block...)
Alphacool NexXxoS Monsta Triple 140mm Radiator (Yes, the 80mm thick rad...)
Alphacool NexXxoS UT60 Full Copper Quad 120mm Radiator
Alphacool NexXxoS UT60 Full Copper Dual 140mm Radiator
PrimoChill PrimoFlex Advanced LRT Tubing 3/8"ID x 5/8" OD (Will be using Bloodshed Red as to avoid using dyes in my coolant, pre mixed or not)
So, it looks like I have some research to do.
The one thing eating me right now is the decision on the motherboard, but I will get around to it soon enough. I am currently using the CHV F-Z and before that was using the M5A99X EVO R2.0. I had success with both boards, however I also had some gripes with the CHV F-Z as well. Due to these gripes and the fact that I am switching back to Intel anyway, I am heavily leaning towards Gigabyte. I had older dual core Pentium rigs (P55 chipset if you recall those days
) built on Gigabyte boards and they were absolutely solid and performed just the same.
Anyway I am going a bit off topic here, sorry, I have a tendency to tangent at times. Thank you once again for this post, now I can start researching the selfless hard work of others to see what I come up with an also possibly see if there is anything better suited for my build / liking.