Did some tests with the VBIOS of the AMD 7970m, here's what I've got so far:   - Overvolting: So far no success, when I increase the 3d voltage the card simply stays at the 2d profile. Fixed that    Be aware that overvolting should only be done by experienced users and can seriously harm your GPU, shorten the life of its components and lead to unsuspected effects and / or system instability