Hey, I currently have two GTX 460's in SLI, flash bios'd from a geforce to a evga superclocked. Current voltage is 1.05 - 1.075 customized in nibitor. The clock is at 875/1750/2000. With fan speeds at 100%, after gaming for one hour, no artifacts or crashes, nothing, Im reaching 78-83C. Are these temps safe? considering my fan speed and all? Thanks ahead of time.