i have a 6970 and all i can say is what heat and what noise, the only case ive read of a 6970 running to hot is from chaotic uk and if im not mistaken when he rma'd it he noticed the board was bent and the heat issue was proberly due to the heatsink had poor contact, i have to agree with bigbruiseral, if you have a decent case with good airfllow these cards do not run hot or noisey
