Thanks a ton sir ,

The video you just shared , the author of the video using 16 GB of RAM and i7 processor . He said he wanted to do CPU mining as well .
Did you tried CPU mining and is it worth to give it a try ?

and after connecting and making the setup do we have to use proper driver which supports 7 graphic card altogether or something different to run ?

and about Asrock motherboard , the both recommended version aren't available in the market because i guess i am too late in the mining process
i have been looking for these 2 model Asrock H81 Pro btc and H97 Anniversary and I did find it on amazon but way to high priced .