I have been using a Asusp8z77 V LX since late june and have not had any problems yet. I would like to know when you should replace your MB??? People say that if you have a deffective MB it will show in the first 3 months. How long before I need to buy another one, I do want t get one with more PCI-E 3.0x16 slots And I did not know it at the time but my Board is not SLI compatible, on the site of the store it said it was and I did not notice this until I looked at the Asus site.