Meh I figured since my ram chips on my 6600GT get rather warm they would add extra heat to the loop thats not really needed.... But I see your point kinda now Nubius.
Crazy, it didn't seem like the RAM chips on my 6600GT or 6800GT ever got warm..I put tweakmonster BGA ramsinks on them because they also are sexy looking ramsinks
But overall I wouldn't be worried about the RAM adding heat to the water with those full blocks.
you want both pump in a row so you get the most head out of the parts you have
seems like putting one pump right after the other wouldn't be a good thing. I'd personally have one before the monstercore, and then either one right after it, or after the GPU blocks right before the res.
Seems like if you just had the pump right infront of each other, it wouldn't do much considering that 2nd pump can only still churn water as fast as the one before it.
As far as the 2xD5 = 24feet of head with each being 12ft, it seems like it'd only do that if you put the 2nd one at the end of the 12 feet.....meaning like say if you put the second one 6 feet up then it'd only shoot 18feet up, 6ft + 12feet of the 2nd one.
This is one of those things we must test sometime over at your house
We'll discuss this further later tonight lol.