I was playing Assassin's Creed Brotherhood, and that's the temp it was at according to MSI Afterburner. I haven't changed the fan settings or overclocked yet. Just wondering if that's a fine temp to play at or if I should increase the fan speed for longevity.
55C is practically idling, you are safe up to 80C, even 90C if you wanted. Generally a 7970 with a cooler like that would be somewhere around 70C to 85C when gaming, but AC Brotherhood is hardly a demanding game anymore.