Anyone know how to underclock an nvidia card?
 

I have an 8800gs
What I want to do is underclock it to save power, I altered the firmware to run at really low frequencies
290 core
725 shaders
425 memory

The thing is I don't think snow leopard takes any notice of this as my xbench scores haven't altered in the slightest, anyone know a way to under clock this card in snow leopard?