How is a dual-core processor with 8 GBs of RAM for gaming?

Well I'm learning about computer components and how they work but I'm still pretty noobish when it comes to it. I don't plan on playing heavy online games like BF4 or Crysis 3, the most I'll play online would have to be on Leauge of Legends and maybe on some Minecraft servers. Any help and advice about this?

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