Yeah, you can probbly just leave it off and forget about it. I used to have a M64 and those things had this LGH (lil green heatsink) that you found on BX chipsets and were horrible and didn't do anything. Running it without was just fun. So u should be fine w/o it. At any rate, try it out and if you find it locking up on you, then put it back on. If that doesnt' help.. thatn it's not the vid card.