I wouldn't recommend 64gb ones. I would get 120 at bare minimum. I'm using an 120gb Intel 520 myself, and i don't have enough space lol. But it depends what you want, if you're just gonna put OS that's fine, but you can't fit more than that. 64gb would go down to like 50gb of usable storage. after OS, you can possibly fit one game, and you need to leave 10gb at least free for your SSD's life longevity.