I have a PNY GTX 560 (non- ti) that is overclocked to 839 mhz. I noticed that it runs kind of hot, around 64 degrees C while playing Minecraft on max settings. I have a bottom mounted case fan that basically pushes cool air into the graphics card, and it still runs hot. Is this normal? Should I worry if I play more graphics intensive games like BF3? Are there any cooling solutions?