I just bought a Leadtek Geforce3 non-Ti that is overclocked using the bios edit. Is the heatsink/fan that came with card sufficient to cool the card? I attached an 80mm fan on top but now it blocks two pci slots. I would prefer to be able to keep the two slots. I know there are alternatives ie. blorb but the retail heatsink is attached really well to the ramsinks. It's gonna be a hassle to get that off. Does anyone have some experience in this matter? Could I just use the retail hsf? thanks for any suggestions.