Would it work if I upgraded to Vista 64 w/ my sig rig, then upgraded to a entire new rig with the same HD? Would it detect the new motherboard, video card, and cpu automatically without erroring me?
It very well might boot fine, and run fine once you load new drivers, but most likely it would require you to reactivate. I'd prefer to wait until the new build was set, or load Vista64 within 30 days of when you will have the new build done. Vista gives you a 30 day trial without activating.
Depends on when you are making your rig. If you are thinking of building a new one by January, then just get Vista now. But, if you intend on making your rig very soon, by a month or two, then just wait.
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