I recently built my computer, and have been running tf2, deus ex human revolution and some other games. However, when I started to play Borderlands 2, it crashed pretty quickly, and I found my card was very hot. I turned up the fan speed to 75%, and now everything seems to be fine, although occasionally it makes a weird humming sound. The card gets up to 52 degrees C, which seems kinda hot. The card is a GTX 780, and although the settings are maxed out on bl2, i figured it would handle it with our getting so hot. Is this normal? Or not?