Is this a good PC?

Vazzn15

Prominent
Feb 28, 2017
25
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530
Specs:

CPU: i5 4960k
Mobo: h87n
Ram: 8gb ddr3 1600
Storage: 250gb SSD 1TB HDD
Graphics Card: gtx 1060 3gb

I want to stream on twitch at 1080p at max settings and I was wondering what the rig can get me on CSGO and R6Siege.

Also what should I upgrade?