That's a dual core w/hyperthreading. On games which need mostly videocard power, that 1060 will be ideal for 1080p gaming. With games which also require plenty of CPU power, your performance won't be as good. A game like PUBG for example will benefit from having a quad core CPU.
I'd rather have a 3gb 1060 and an i5 rather than a 6gb 1060 and an i3 for the newest games.