My onboard network shuts down when i go over pci-e 110mhz. But the Areca 1680ix just geting faster with more pci-e speed :p 10 mhz more on the pci-e gives almost 100mb/s more readspeed with my 7 vertex ssd on Areca 1680ix. Just testetd 110 mhz. I am scared to try 140 Maybe the Areca goes too fast