i7 CPU upgrade

Sep 16, 2018
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Current build:
CPU: i5 6400
Graphics: MSI 1050 ti
Motherboard: LGA1151 H110M-A-CF
HDD:WB Blue 1TB SATA
SSD: PNY CS1311 120GB
RAM: DDR4 16GB
Power supply: EVGA 430W

I am new to PC. I just bought this PC from my friend and I want to upgrade my CPU. If I want to upgrade it to i7 7700/8700, do I need to buy another mobo? Also, are they compatible?
Thank you!
 
You can upgrade to a maximum of 7700k with that motherboard. Your motherboard will not allow for overclocking however. If you want to overclock, you will want a z270 series motherboard. If you want an 8000 series CPU you will need a 300 series motherboard.