Upgrade from 32-bit to 64-bit

Right now I am running Vista Home Premium 32-bit. When I move to Win7, I want to switch to 64-bit. But I'm confused about which product I need to get. Can I do this with the upgrade product or do I have to go full release? Also, could I do an Ultimate upgrade (if upgrade will work) instead of Home Premium?

I've got a couple of computers to switch (one Vista and one XP). I am thinking to go with the Family Pack, but I think that is an Upgrade license only.

Also, since I'm a SOHO user, is there a compelling reason to go Ultimate instead of Home Premium?

Airbot said:

Hi tobriant and welcome,


You can't upgrade from 32 bit to 64 bit, only clean install. To upgrade, you'd have to go 32 to 32, or 64 to 64. If you want to know of the differences between Ultimate and Home Premium, you can look thru these threads here.

Compare Windows 7 Editions
https://www.sevenforums.com/general-d...-ultimate.html

I guess I didn't ask the question very well. I know that if I switch from 32-bit to 64-bit, I have to do a clean install and reinstall all my programs and drivers. What I was trying to ask is which product version must I buy to do that. Obviously, if I get the Full version, no problem. But, since I have legal versions of XP and Vista, can I buy the upgrade version product to do the job? It would be nice to get the Family pack product to save some money. But if that doesn't allow me to go 64-bit, then I'm not achieving what I'm shooting for.