Is there a max flow rate?

Because i've seen people using fish tank pumps and when I was looking at them, I saw some that put out 1200GPH. Is there a certain limit that one should be aware of when getting a watercooling setup?

Usually the budget limitations keep the power at bay.
Anything under $200 should work fine in wc setup.
Keep in mind that 1200 is the maximum flow rate with nothing attached to the pump.

Well I was checking the pet store and they had a mag12 for $100.00 and that thing pushes 1200GPH. That's why I asked.

the most popular theory around here seems to be: too big a pump adds TOO much heat to the water (small pump=9.0W BIG=45+) and i bet the mag 12 is even more! this is also the trade off when you think in the head (preasure) vs heat ratio of a pump.

should all be in a stickey some place...

http://www.pondandfountain.com/pumps_danner.html

ya the 12 is 110 watts, thats another OCed CPU to cool...


EDIT: thats the problem with the pumps were all using: too many watts for too little preasure. hence the over the screw pump Cathar teased us with. (hint to Cathar, build them and we will buy...Cascade and screw pump combo $500... i might pay that )

link: http://www.ocforums.com/showthread.php?s=&threadid=279381

Joe Camel sums it up. You always want the most flow possible, but there comes a point where the extra flow rate doesn't cancel out the heat added to the system.

Yeah, that's what I was wondering, when that would max out. I'm thinking about a MCP600 since i've been hearing lots of things about that.