MPC255. I would go as far as to say that the extra rad makes no difference whatsoever to flow rates. I get nearly the same temps with the pump at minimum speed, or maximum speed, so I think its safe to say this pump is overkill for all but the most restrictive loops. Mine is pushing through 2 rads, a D-tek V2, and 3 EK full-coverage GPU blocks.
I use Yate Loons. Most watercooling guys will recommend them, they are simply the best compromise of noise/power/price. If you are just buying one or two then it doesnt matter much but if you can save 5 bucks each buying 8 fans, it adds up to another water block, or a better pump ;) They push more air than any of the fancy silent fans I've bought (scythe, artic cooling, etc), and I can slow them down with a controller if I choose, then they become silent. I talked to Linus at ncix, and he did some tests apparently and found that the yate loons had much better static pressure than some of the 'silent' competition, that's why they work so well with radiators.
Push, pull, doesnt make a difference as far as I can tell, if you just oversize your rads, then the fans become less and less important.
I love the pump, the ability to slow it down is just awesome.
Hehe... Can't you just plug a pump into a fan controller to slow it down?.. So.. what your saying is.. If I have 2 MCR220 rads, then it doesn't really matter what fans I put on.. even my 40CFM fans will work ehh? awesome..
Ya I suppose I could do that with the pump, but I don't have a fan controller yet (building one). I unplugged all my fans and gain less than 10 degrees. If I leave only one fan per rad, I gain about 3 degrees. So really, the difference in temps between fans is going to be very minimal unless you are really over-taxing your rad. With the pump turned down and the fans off, its really, really, really quiet ;)