cdgamerz :
i am getting a gpu soon, is the i5 7400
8gb ddr4 ram
good for gaming?
You need a VIDEO CARD to GAME with period. You can't game with just the iGPU built in. Also as noted depends what games your playing what graphics you're going to have it on, how many screens you plan to be using, resolution, etc. Lastly you can't just BUY a GPU, especially for gaming higher end, you also need to REPLACE the PSU to SUPPORT the MORE POWER demand the GPU will place on it.
If you have no clue about any this stuff, please check the TH guides here on the home page, or take it to a Computer friend or Mom and POP Computer store for support. This is where things get risky, technical, and if you make a mistake YOU have to pay for replacements, they won't "swap" out something you accidentally broke.