Gooserider
I see what you mean about the mobo choice as it's more limited with dual CPU systems, It would still annoy me however, and it's beyond comprehension that some makers see fit to make newer single CPU boards without the holes, (unless of course they are indicating that they don't want the modders to buy their products)
Not sure what you are asking about the flow configuration, but I split the flow in distrubition as it's the most effective way to avoid overall system flow restrictions with that many blocks. The CPU only adds at most 0.5C to the coolant temp in one pass, and all the other system blocks combined about the same added together. If they were run in series it would be highly restrictive to flow for the most important block, (CPU). Running it in series the blocks would have to be much larger and non restrictive.
If you mean the layout then to be 100% honest it's not configured like that yet, as the HDD block is still 6mm festo, which requires an extra splitter, but It's how I intend to run it when the HDD block is replaced. The reasoning is that some or the blocks will need doubling up as there are 6 extra blocks after the CPU Splitter-X and only four outputs. I consider the VGA to be the next most important, so each block gets it's own outlet from the Splitter-X where as the less important HDD/PSU & NB/Mosfet will be fine sharing an output respectively. With good flow and cool coolant I doubt you could even measured any real world difference even if it actually mattered, which I'm pretty sure it doesn't, as long as all ouputs have reasonable flow through them.
The inflow/ouflow tube I used is Tygon R-3603 which is 1/2" ID, that as I said is heat stretched, (boiling water immersion), over the 5/8" OD (1/2" ID barb), keeping the ID "pure" throughout. It really is best as 1/2" Tygon on a 1/2" barb is too loose IMO, and could present a leak / weep issue even with a clip. If I were using 1/2" OD barbs I would get 3/8" Tygon and do the same I guess. Tygon is thick walled and a brass barb wont cut through it even if the edge is sharp, this edge is what gives it good grip. If you intend to use socket clip retention I highly recommend Tygon tube, (or silicon, but you'd definately need good clips with silicon)
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