I think you will need to replace it. I replaced mine not long ago, because it was so noisy. The replacement, a THERMALTAKE EXTREME SPIRIT II has a small heatsink and a small, noiseless fan, and the heatsink gets remarkably warm. So I don't think the mobo will survive long if you don't cool that chipset. The thermaltake is a good choice btw, it does it's work, no noise either, it's roughly 15$ or so though, but can always be removed and reused on a new mobo later on. It's a universal chipset/NB cooler.