64 gb is actually enough for a dedicated fsx system. you can install windows and fsx on it. then the addon scenery on a separate mechanical hdd. that's i how have it setup. seems to be a good price/performance ratio. in my opinion it wouldn't make sense to have windows on a mechanical and fsx on an ssd.

Gents, the NGX forum is really busy with NGX traffic. This discussion has been debated MANY MANY times over in the FSX hardware forum. All the information you need can be found doing a search.Thank you!