I have a laptop with an Intel core 2 duo and i do believe it supports 64-bit OS. Will Ubuntu 12.10 64bit run on it without any trouble? Thanks!
The best thing to do is to make an Live USB /DVD of Ubuntu. The instructions are on the ubuntu.com website.
Boot your laptop from the USB or DVD and select the option "Try Ubuntu". This will allow you to test Ubuntu without installing it on your hard drive. You may want to check Ubuntu runs with your graphics card, sound card, wifi chip, web cam (if the laptop has it) etc. rather than just the CPU. Even though driver issues are less common than they used to be they crop up from time to time.
If something does not work out of the Live USB, it does not mean it won't work at all. It means you have to ask some questions and do some extra downloads and configurations yourself.
See Installing 64bit ubuntu on Intel(R) Core(TM)2 Duo CPU T5870 , possible? for some more information.
Best of luck.
