Well.....that depends.
The inner are 6mm and outer 8mm.
I am very pleased about my temps....think that they are very nice for a system with 1048, 10x90 degree elbows and a GF4 in the loop.
Noise level is a bit higher than expectet. It is louder than the regulary office computer, but then again...it is 120mm fan noise, not 6000 RPM 60mm. But I should say that I have mounted the fans directly onto the case top...with no absobing material between. I cant really locate the noise...if it is from the fancy fan grill mounted on top of my case, or that it is the rad it self. I have sealed all the way around the rad. and the fans with tape, so that all the air is pulled from the rad, and not besides it...this helped a little on the noise.
The Cuplex itself is very easy. I bought it with the 4xscrew mounting kit, and not the springs. I'm not happy using springs, cause I don't think that they will press the Cuplex suficiant against the core.
But...
The quick connections from aqua-computer premounted on they products...they arent THAT good. They are a bit hard to work with...not getting the hose IN the connection, but out again. I find the quick connections supplied by multimediashop as a fare better choice.
The quality of the cuplex is by fare the best I have seen and the bottom is higly polished. I used a metal polish to give it the last thouch and to remove spots from fingers
Baaa.....SCSI...WAY to expensive for the common people...me
But as I see it...my rad. is really NOT been used alot. There are almost no difference in temp in and out from it.
I'll try to load the CPU with 2.0Vcore, 1750Mhz and BurnK7 to see if the rad can take it or not(really should do the job).