I want to ask what is the suitable mobo for K series cpu? My CPU is I5 4670K and graphic card R7 260X currently im using Z77M-D3H. Is it this mobo suitable for OC?
I highly doubt you are using a 4670k in a Z77 motherboard. The proper board for overclocking a 4670k is a motherboard with a z87 chipset. The Z77 is the overclocking option for a previous generation cpu like the 3570k.