[BGP Spook]

Originally Posted by Tachyon

Yeah .. I didn't think I could get you to ignore that part of the linear gear analogy. So ..ah .. ignore that part of the gear plz.. .. yes I know a classical 10' linear gear the entire length's weight would be present at all times ... I was hoping you'd make the jump with me once I made the fluid part of the analogy. The fluid that the pump has not placed in the vertical tube is not part of the equation.

Don't worry about it.

I understood the analogy but was just pointing out a flaw which needed addressing.

No hard feelings.

Originally Posted by Tachyon

BTW- the basement floor idea is just a interesting side thought for me.. I'm really am thinking along the lines of a single radiator .... like a GT stealth 360 Blackice.

Originally Posted by Tachyon

ah .. you could say I have a better the average understanding of mechanical and electrical engineering. No degrees - but ... plenty of practical experience. Yes "mentally comfortable" was my first choice but I liked the "engineering" flavor that best described my feelings.
...
What is your background if I might ask.
...

I am a fourth semester year engineering student.

I have a variety of technical experience.

I have spent the last three years reading about and researching water cooling and the last two years with my computer being water cooled.

Originally Posted by Tachyon

Sry to hear your opinion on the Laing pumps. What pump do you like for this application?

I fear I may have not been clear.

The MCP350 is well suited to internal case use, mainly because of its performance relative to its size.

But for the basement project?

Oi, I don't know where to begin for that.

For general usage, I am very cheap.

You can see some of my recommendations if you read a couple of the threads.

Originally Posted by Tachyon

I will look over the radiator flow rate threads you provided. Looks to be good reads. That part of my design is still unfocused. But I'm not worried about it at this point since there are plenty of good solutions out there.

Be sure to review the PA series curves.

Marci has been gracious enough to provide links and the PA series are excellent radiators.

Originally Posted by Tachyon

Question: “the D-Tek fusion is a jet-impingement design decreasing the flow”. Wouldn't a single pump dedicated to just that device (one of my 3 loops) be best able to deal with this back pressure as opposed to this one pump pushing against the CPU and two GPU's? So a larger pump might be necessary on a single loop series system. But you could get away with smaller pumps on a parallel system.

When people get large multi block loops in series they often will double up on their pumps as well.

Say something like, T-line or rez>pump1>radiator>pump2>rest of loop.

By running identical pumps in series you can basically double the head pressure causing an increase in flow rates.

While if you run them in parallel you get about a 50% - 60% increase in flow rates.

By running two pumps in series you can overcome the difficulties of most any loop in series.

Originally Posted by Tachyon

I’ve not ignored the friction of this system nor the back pressures that the various blocks might offer. I just do not have the field experience to be able to quantify it into my thinking at this point.

Bigger tubing will offer less friction than small diameter tubing.

Avoid sharp turns, U's, right angles, in your tubing layout.

Run the shortest simplest route from your pump back to your pump.

As for water blocks...some water blocks offer more resistance than others.

The Apogee, MCW60002, and the Maze 3 or 4 are good examples of some pretty free flowing water blocks.

The Alphacool NexXxoS XP, the Storm G4 or G5, and the MP-05 SP are good examples of fairly restrictive water blocks.

A worth reading, if controversial review.

Which might bring you to question your water block choice.

Originally Posted by Tachyon

Greatly distilled (yes these have been long posts but fun none the less) you’re saying don’t over engineer it. A single 1/2” series loop from a larger pump to the CPU -> GPU1 -> GPU2 -> a radiator -> rez (no need to have two reservoirs now) is what has been proven to be “enough” to get the job done.

That pretty much sums it up.

If you want to get into the details and understand why it is enough, which I recommend why be dogmatic, then I recommend you do more research and continue to ask questions.

---------------------------------

I am very tired right now and need to sleep.

I haven't slept very well the last couple of days for one reason or another.

I would like to continue this discussion after you have read about some of the "recent" developments in water blocks and radiators.

You may change your mind on some things, particularly on the importance of the one's choice of radiator and fans.

I know, seems ironic that the biggest(or next to biggest) controlling factor in water cooling performance is actually the air cooling component of it.

Such is life.

BTW, congrats on the Bears winning.