Question Whats a good CPU for a GTX 960?

Mar 11, 2019
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I'm new to pc building and I was wondering about a good CPU to match a GTX 960. As I'm only playing games on the PC I'm worried about bottlenecking my GPU.
The games I'm playing right now need a decent CPU (Mostly Rust and Battlefield 1).
My current CPU is an i5 6400.