I5-4460 paired with GTX 1080 graphics card
I5-4460 paired with GTX 1080 graphics card
You're asking if upgrading from an i5-4460 to a newer processor will affect your GTX 1080 gaming at 1080p. It's likely to cause some performance issues, especially in demanding games. However, since the person is used to older hardware, they might not notice much difference. Upgrading could still be beneficial for better performance.
It’s likely to happen. He might be able to use it, but there would probably be some performance issues.
This game might work with Assassin's Creed? Probably not, it could slow things down.
It's likely the fourth generation i5 CPUs reach their limits when paired with the GTX 1070 for any resolution you choose. They'll work well compared to the GTX 960, but the GPU won't use its full potential with that processor.