So I'm building a computer and purchased an ASUS A8N-SLI motherboard. I was intending to buy an Athlon 64 CPU but have recently been contemplating on getting an Dual Core CPU. I am aware that I will have to update my BIOS to do this, but will I even be able to boot up my computer to update the BIOS if the X2 is first chip to be used on the motherboard. I'm not even sure if I phrased that question right. But I hope you get what I'm trying to say. Thanks. Edit: I was just looking around on the ASUS website and I think my Mobo already supports X2 CPUs. Never bothered to look at the stickers on the box it came in. Silly me.