When looking at coolers the main thing you want to worry about is the CFM, this is a mesurement of how much air the fan will move.
The first one at 35.5 CFM is relitivly low, i've seen ones go up to 80, but then they are circling around the 50$ mark.
The second, from what I can see doesn't even mention how much CFM it has, making me question how good it actually is.
If your looking at replacing an existing stock cooler, the first will perform around the same, not really better, as for the second since it doesn't list CFM I really couldn't tell you if its decent or not.
Edited by james_8970, 17 March 2007 - 01:43 PM.