All the standard pumps are centrifugal.
Positive displacement pumps aren't required for these low power/pressure loss appllications. Centrifugal pumps are cheaper and less complicated to manufacture.
Hope this helps.
Chuck: long time no see. I got a new mobo and when I get new memory I'm gonna try for 4.6-4.7 in another "window open-bench till destruction" attempt. Last time I had temps below 0C but the water got a little slushy at about -12C How hard have you pushed your D820? I figure I'm getting a new CPU soon anyway, big deal if I toast mine...1.7vcore? Maybe 1.725.
You mean my 840? I got it at 4Ghz on 1.55vcore. Sadly it's basically it's limit on that safe voltage and water cooling. Right now it's at 3.8 since it does have some problems with BF2 at 4Ghz, hiccups some sort. Still my pc plays well and I'm hoping to have save enough to upgrade by the time Crysis comes out.
It's just what's in my sig right now. I am not sure if I want to buy a new GPU first, or new memory & CPU first. Got new HDDs and Mobo with the last paycheck. I will probably end up getting memory and CPU once the E4320 and others are released, give DDR2 another couple months for the price to drop a little.
I agree though, my PC plays just dandy for my needs 8)
Aparently very cheap ones. I hand picked an Einheim german made pump for my system because they are long lasting high performance. I use 1/2" tubing and this pump pushes some serious water through that thick tubing no problem.
On my old system I had a Thermaltek Aquarius II unit that had a tiny pump. It worked ok for a Socket A Athlon but not enough for newer chip. It had a tiny little pump/reservoir.