theseeker,
Windows XP Pro... though I only installed Windoze as a sanity check when Linux reported the lower-than-expected cpu speed (I'm now running Ubuntu Feisty)
I purchased all the parts at Newegg. It looks like they have the cpu in stock right now...
I recently purchased an Intel Core 2 Extreme X6800 Conroe 2.93GHz. This chip is supposed to run at 2.93 GHz in stock form. I had planned OC'ing the chip, but I haven't even been able to get it running at 2.93 GHz! In both Windoze and Linux, the chip reports 2.133 GHz even when it is under...