I remember seeing on anandtech that a motherboard was modded in order to support penryn, but I cant remember if it was a 680i or not and unfortunately I cant find the article as of now. It is reasonable that it would work because the 680i boards support the higher FSB, but that may mean you are already pushing the boards and their overclocks will be hurt. I really wish I had a time machine because im still torn between getting a new pc now and throwing a penryn in later or waiting to get the new motherboards etc.