Re: Water Flow Characteristics
 

BTW, bobo's right - seven questions, all at once, almost all have two or three question marks in the title (almost spam-like), all seem to be open ended questions, and all in their own new threads.
This is ProCooling - do some research, find and read relevant posts, both here and on the web, figure out your own answer as far as you can, post a question including as much of the answer as you can come up with (or several alternaltive answers if you're stuck).
And...appropos this particular thread: if several posters suggest that you might want to take a different approach with your proposed setup, and you want to "go your own way" - that's fine, but many of the folks answering questions are going to decide they're wasting their time and not bother with the next questions.
No offence intended, of course :)

Re: Water Flow Characteristics
 

Why no split your loop?
one loop to your CPU and lesser 'hot' components
other loop to your 6800GS and lesser 'hot' components

ok, you'll need an additional Rad/res... , but it might make more sense

Re: Water Flow Characteristics
 

Or one radiator/res and two loops coming out of it. One with a small pump for the cooler stuff, one with a big pump for the larger stuff. Then combine it again to go back into the rad. Might be effective if you have a lot of low power devices to cool.

Personally though, I'd just use air for everything but CPU/GPU.

Re: Water Flow Characteristics
 

Should be plenty of basic info in the threads here talking about Fluid Dynamics. Water flow properties is the wrong term and might be why you are getting few results.

You should keep post about "Water flow properties" seperate from WCing loop questions because they are separate topics and misleading.

If you plan to WCing with all that stuff planned
1) have a large case because you wont be able to loop that in midtower or fulltower. SERVER tower or larger case is required.
2)with a bigger case I would just air cool the ram and HDDs. Sounds like you wont be having any BH-5/CH-5 UTT overvolting at +3.2V or overclocking HDDs either so it doesn't warrant watercooling.
Good 5 1/2" HDD cooling enclosure is enough.
http://www.svc.com/hardiscool.html
3) Chipset WCing is not neccessary. These will do the job
http://www.svc.com/hr-05.html
http://www.svc.com/mcx159-cu.html