I'm using MSI afterburner to overclock the GTX680MX. This is netting me 60fps Ultra on BF3 with Anti-Aliasing off. I'm pushing the Core Clock to 920 Mhz (+230) and the Memory Clock to 3000 Mhz (+503). This is causing my GPU to run in the high 70's low 80's and I think it hit 91 C at some point. I heard the maximum operating temperature is 98C for the GPU. What are the risks with overclocking? I've never overclocked anything before.