[Ygorl]

I suspect "quasi-enabling" won't be any worse than using the card with OpenGL totally disabled. I of course can't make any promises, but using e.g. Mesa I think you should be doing all the OpenGL rendering stuff (which is what makes your card hot) in the CPU and then sending the finished product to the video card to put up on the screen. So, as far as the card is concerned, it should be no different than other non-3D-accelerated graphics.

Maybe someone with a stronger background in hardware can confirm? But if it were my card, I would feel comfortable using it with Mesa.