

see image above
My computer now is slow to browse and lagg at games
my question if i upgrade my i5 6500 to i7 6700k
this is worth it or useless
because i5 6500 have 4core and i7 6700k have 4core
same core right?
i dont waste my money
any suggestion?
i need specific answer
if i upgrade my processor to i7 6700k this is worth it?