Download an 64bit application and try to run it. If you can run it then yu have 64bit procesor.
About 64bits applications and games - it gives an increase in performance. But in most cases this is an little boost becouse writing application for 64bits procesor is a new thing so most of application are not optimalized to run with this new procesor. They work but they dont use all his power. I’ve notice perfomance increase in many applications and games.
And about ET. So there is no 64 bit binary for this game? There is also second think why there should be 64bits binary. With 32 bits i have mess in my ssystem becouse i need to have also 32 bits libraris or an whole 32bits chroot enviroment.[/quote]
so it wont screw up my computer if I try to run a 64bit application?