03-30-2013 12:32 AM
Download Origin on your second PC. Login with the same account. Download SimCity.
You can install it on as many comps are you want but you can only run one at a time.
The saved cities are stored on the servers.
03-30-2013 10:44 AM
There may be a small residual download, or a 5 minute wait while Origin checks your files, but it's a lot quicker than downloading the game again.