I use run a Pentium D dual-core processor @ 2800 MHz on an all-Intel motherboard. I have not had good luck running 64-bit Ubuntu on this system, either with the present motherboard or my previous one that used the same CPU. Lots of set-up issues, lots of 32-bit packages that wouldn't run on the system. I did quite a bit of checking around the Internet and found out I wasn't the only one with the problems. My take on the whole shebang is that Intel is way behind AMD and VIA on 64-bit Linux support. I now deeply regret giving Intel another try; I should have stuck with AMD. I have issues even running 32-bit Ubuntu, with the available screen resolutions never being detected and configured without work-arounds. On the other hand, the Pentium D is not a true 64-bit processor, whereas as I understand it the Core 2 Duo is. But I will never buy another Intel CPU or motherboard. Probably the best way to get a preliminary clue is to download a 64-bit version of ubuntu, burn it to CD, and boot from the CD to test. Or go ahead and install it in some unused disk space. Partitions are easy enough to delete and reformat. Best regards, Marbux <div class="gmail_quote">On Tue, Mar 25, 2008 at 6:20 AM, krishnakant Mane <<a href="mailto:krmane@gmail.com">krmane@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;"> hello, this is not really directly related to accessibility but perhaps may be a problem as such. I have a machine with intel core2 duo (sentrino ) t5500 processor with 1.6 ghz/2 specification. is this a genuan 64 bit processor? should I use ubuntu 64 bit with all t5500 core2 processors for optimul performance? _______________________________________________ Blinux-list mailing list <a href="mailto:Blinux-list@redhat.com">Blinux-list@redhat.com</a> <a href="https://www.redhat.com/mailman/listinfo/blinux-list" target="_blank">https://www.redhat.com/mailman/listinfo/blinux-list</a> </blockquote></div>