Evga 680i SLi a1 revision board?

i hold the evga 680i SLi 122-CK-NF68-AR board



what is the difference between that and this:

evga 680i SLi 122-CK-NF68-A1

Evga 680i SLi a1 revision board?

These are both motherboards from evga.



The A1 is the newer revision of the AR. From what I can tell, the lone change is that there's a fix within the A1 because of a problem with overclocking Intel Quad Core CPU's contained by excess of 1300MHz FSB on the AR.



If you have a Quad core CPU and are trying to overclock it, they'll replace your AR near an A1 at no charge.