The best thing to use is one of those handheld plastic fans that cool you off. They work great on PCs that are overclocked.
This is the crappy ULTRA TEC unit I use with my Q6600. I'm sure our temps won't be the same unless yours is a G0, but it works well. My Q6600 is at 3.6Ghz 24/7 on 1.44Vcore. It idles at 30C and load is high 40s.
I've been looking at this: http://www.newegg.com/Product/Product.a ... 6835101011 It has good reviews and ASUS is great, but the only thing that concerns me is the price.