I recently bought Battlefield 3 but I don't have my gaming PC yet.
How many times could I use my product key.
Because I want to try it on my old PC but I am not shure if I use the key I can't use it again on my futured gaming PC.
If you register your key through Origin...which I believe you have to, then when you build your new PC all you have to do is install Origin on your PC and log into your account and Download it again.
I suggest you make a copy of your Origin Games folder on your C drive before you build your new system. When you reinstall Origin on your new computer just copy over your Origin Games folder and you won't have to download 15GB worth of files agian.
With the origin games folder trick make sure you start downloading each game on the new PC and quickly pause it, *then* copy over your old games folder and it will work fine - you have to start the download to get everything setup first.