Intel Core 2 Duo is 64-bit. <a href="http://www.intel.com/products/processor/core2duo/specifications.htm?iid=prod_core2duo+tab_spec">http://www.intel.com/products/processor/core2duo/specifications.htm?iid=prod_core2duo+tab_spec</a>  -brent <div class="gmail_quote">On Fri, May 30, 2008 at 4:13 AM, Karl Schuttler <<a href="mailto:rexykik@gmail.com">rexykik@gmail.com</a>> wrote: <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> I haven't really kept up with hardware very much in the last few years. If I were to install linux on a core 2 duo system, would I use the x86 install or the 64 bit install? </blockquote></div>