"When we reviewed this chassis in its previous form as the PC3-720BK we were left wanting. There was a major design flaw that kept the PC3-720BK from performing at the levels we expect from a high end cooling system. Basically it was a simple fix; reverse the fan direction so that the radiator receives ambient air rather than pulling from the heated air inside the case. That is exactly what Koolance did. Then they added another fan, increased the radiator size by a third, and dramatically upgraded the pump."
FULL STORY @ HARDOCP (http://enthusiast.hardocp.com/article.html?art=MTIxMCwxLCxoZW50aHVzaWFzdA)