What case are you building your system with? Be sure you setup a go airflow thru your case from front to back. Usually 12cn fans are a good choice with one in the fron to pull in cool air and one out the back to exhaust the hot air. You can even add on to the top if you have ports there. The AMD cards tend to run hotter then Nvidia so if you go AMD you'll need good ventilation. Regardless of what brand you get heat is the enemy of your system, so be sure you have a good air flow thru your case to protect your investment.