Yes I've heard the AGP version can be unlocked to a GT with 16 rendering pipelines (16x1,6vp) instead of 12.
Use RivaTuner to do this but check for possible artifacts if the pipelines are damaged.
Check out this webpage on how to do it.
Use RivaTuner to do this but check for possible artifacts if the pipelines are damaged.
Check out this webpage on how to do it.