Hi I am from Canada. I want to buy a lenovo g555 laptop but it is available with two types of motherboard Intel DZ68BC and lenovo company motherboard. I am a layman so I do not know any difference between lenovo company motherboard and Intel motherboard DZ68BC. So, I need your help. Try to tell me each and every difference between lenovo company motherboard and Intel motherboard DZ68BC. Also tell me varieties of all motherboard.