I'm just running a single core AMD Athlon 64 3500+ CPU and my old Zalman fan is doing its best but I believe it's time for something better. I was thinking of spending about $50.00 on an air cooler, but my head is swimming there are so many out there. The Cooljag Falcon 92-AL Quad Heat Pipe cooler looks promising from the reviews I've read, but I don't know if there will be enough room for it. Anyone have any suggestions / experience / cautions related to CPU coolers for this motherboard?