Hi good people!
I am little on a budget but I would like to buy some used CPU and GPU and upgrade my have a Lenovo Legion Tower PC (Y520T-25IKL) which now has:
16gb ram (2400mhz, I think)
GeFroce GTX 1050 ti (4GB)
Intel i3 7100
For CPU I was thinking an i7 6700k or i7 7700k for...