I'm 100% sure You'll see improved performance with a faster CPU.
I have good experience with an Intel Pentium M solution with 1.8GHz.
Do a search on this site and you'll end up with a lot of information regarding this issue.
I didn't manage to receive anything. But there is still the same issue of cutting and pasting the entire thing - unless some friendly resource at Mikrotik can provide the entire document in XML.exempli gratia: http://www.mikrotik.com/docs/ros/2.8/ip/route.xml
Use PERL for windows. I'm about to test it in a week or so - so I cannot guarantee you success. ;)any version for win based systems ? :) (with/without SSH)