the size of the PCB can tell you about how big the heatsink is. the thermal efficiency is not increasing much for gpus with a given size since they are already using heat pipes and copper fins. if this gpu is just like a 5850 (150W draw in games, and the same size) we can be pretty sure its going to be about the same noise. then look at the 5870, a little bigger, and draws 221W peak (still has only 6+6 pin) and is much louder.
so if this new card is smaller than a 5870, but draws more than a 5870, then it will be loud as hell. and when i refer to the PCB, i dont care about layers, i care about length.
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