[casecutter]

I think having a fan blowing over the power regulator section of those cards is more important than any other place. The stock coolers are lacking, but they are good enough if you are not running overclocked. Also, case airflow may be hurting. Water cooling is good, just alot of extra work to get started. Once it is all installed it is painless. Just be certain to stay away from cheap parts. Almost all kits are useless junk too. Building a very good water loop is usually the same price and sometimes cheaper than the inefficient kits. In fact, Swiftech is about the ONLY company with any good kits, but they are also pricey.