Intel Core i3 6100 --> i5 6500
Gigabyte H110M-DS2/Asus H110M-K
Kingston/Corsair 8GB DDR4 2133MHz Value RAM
Kingston SSDNow UV400 120GB SSD

Thanks .
I decided to go with i5 6500. So the mobo no need to change right ? Since I only run one SSD , maybe a couple of HDD, without gaming , no need GPU also. For the mobo, Giga or Asus are the same ? Do they have pro and cons ?

btw, i3 6100 is the best i3 in term of price and performance ? asking on behalf of my friend

Yaya. One of my friends also suggested me this 850 Evo SSD. He said the speed is notably faster than the UV400. Since both are SSDs, can the difference be THAT noticeable ahh for a layman like me? If it is not, then no point forking out the extra for something which I cannot feel haha.

Thanks for your explanation. Do you recommend SanDisk or Kingston SSD? In terms of reliability.