Heh, just like speedfan says my 12v+ rail is 12.7volts.. a weee bit off compared to teh bios.
But yeah, BFG cards are factory overclocked, making them faster... but as most know, overlocking stresses the hardware and produces more heat.
The odd thing is though, in my friends' video card, it runs perfectly fine before it crashes to black. He made a video of him playing Dark Messiah Of Might And Magic.. it ran great... until the screen flickered to a green checkerboard-like colour then went black... yet the GPU temperature is relatively safe.. (60s C)