[CentOS] OT: Hardware upgrade help

--On Tuesday, August 23, 2011 11:57 PM -0700 John R Pierce 
<pierce at hogranch.com> wrote:

> the x86_64 architecture has teh same basic instructions as x86_32, but
> with more registers which are also wider 64 bit registers.

As someone who coded in assembler for PDP-11, PDP-10, 8086, and 68000, I 
have to report that more registers is a Very Good Thing. Just how many more 
registers do you get when going to 64-bit?