I just put together a new system with an Asus M2N-E SLI board and an X2 5200+ cpu. I had no intention of doing any overclocking with this set-up so I just went with the stock cooling that came in the box (I didn't even bother to scrape the crap insulation off and replace it with AS). The idle temps with AMD cool 'n quiet are amazing and under load I only hit around 44c. I have one side fan and one exhaust fan in the case and I'm using an OCZ Stealth X-Stream 600W power supply. I had thought about getting and aftermarket HSF but I don't see why now. Did I just get lucky with the way things went together or is this common (this is my first X2 build)