Is this pc good for gaming?

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If it were my choice I would probably get a better motherboard and a AMD FX 6300 just because of my personal experience but back to the point yes that pc would perform perfect for gaming especially for the games you listed and the x4 760k will not bottleneck the R9 270 but other than that your build seems strong although the motherboard and processor seems to be the weakest link but that doesn't mean it's bad. if you are not on a strict budget or can save your pennies get the
ASUS M5A97 (http://www.newegg.com/Product/Product.aspx?Item=N82E16813131767) or a
GIGABYTE 990FXA-UD3 (http://www.newegg.com/Product/Product.aspx?Item=N82E16813128514) if you can.
AMD FX 6300 (http://www.newegg.com/Product/Product.aspx?Item=N82E16819113286)
If it were my choice I would probably get a better motherboard and a AMD FX 6300 just because of my personal experience but back to the point yes that pc would perform perfect for gaming especially for the games you listed and the x4 760k will not bottleneck the R9 270 but other than that your build seems strong although the motherboard and processor seems to be the weakest link but that doesn't mean it's bad. if you are not on a strict budget or can save your pennies get the
ASUS M5A97 (http://www.newegg.com/Product/Product.aspx?Item=N82E16813131767) or a
GIGABYTE 990FXA-UD3 (http://www.newegg.com/Product/Product.aspx?Item=N82E16813128514) if you can.
AMD FX 6300 (http://www.newegg.com/Product/Product.aspx?Item=N82E16819113286)
 
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